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Tytuł:
Osteological correlates for quadrupedality in ornithischian dinosaurs
Autorzy:
Maidment, S.C.R.
Barrett, P.M.
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/20234.pdf  Link otwiera się w nowym oknie
Opis:
The evolution of quadrupedality from bipedal ancestors is an exceptionally rare transition in tetrapod evolution, but it has occurred several times within the herbivorous dinosaur clade Ornithischia. Stegosauria, Ankylosauria, and Ceratopsidae are all uncontroversially quadrupedal, while basal ornithischians and basal ornithopods are uncontroversially bipedal. However, stance in iguanodontian ornithopods, including the hadrosaurs, and in non-ceratopsid ceratopsians is debated because robust osteological correlates of quadrupedality have not been identified. We examine a suite of characteristics that have been previously proposed as osteological correlates for bipedality or quadrupedality in dinosaurs. These include both discrete anatomical features, which we assess as correlates for quadrupedality using character optimization onto a composite cladogram, and proportional ratios, which we assess as correlates by reconstructing nodal ancestral states using squared-change parsimony, followed by optimization. We also examine the correlation of these features with body size. An anterolateral process on the proximal ulna, hoof-shaped manual unguals, a transversely broadened ilium, a reduced fourth trochanter and a femur longer than the tibia are found to be robust correlates of quadrupedality in ornithischian dinosaurs. Along the ceratopsid “stem” lineage, quadrupedal characters were acquired in a stepwise fashion, with forelimb characters developing prior to changes in the hind limb. In contrast, iguanodontid ornithopods display a mosaic of character states, indicating varying degrees of facultative quadrupedality that probably arose for a variety of different reasons. Hadrosaurs are found to possess all character states associated with quadrupedality and were probably predominantly quadrupedal. In general, quadrupedal ornithischians do not appear to have been constrained by their bipedal ancestry to a particular order of character acquisition.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sauropod dinosaur remains from a new Early Jurassic locality in the Central High Atlas of Morocco
Autorzy:
Nicholl, C.S.C.
Mannion, P.D.
Barrett, P.M.
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/21304.pdf  Link otwiera się w nowym oknie
Opis:
Despite being globally widespread and abundant throughout much of the Mesozoic, the early record of sauropod dinosaur evolution is extremely poor. As such, any new remains can provide significant additions to our understanding of this important radiation. Here, we describe two sauropod middle cervical vertebrae from a new Early Jurassic locality in the Haute Moulouya Basin, Central High Atlas of Morocco. The possession of opisthocoelous centra, a well-developed system of centrodiapophyseal laminae, and the higher elevation of the postzygapophyses relative to the prezygapophyses, all provide strong support for a placement within Sauropoda. Absence of pneumaticity indicates non-neosauropod affinities, and several other features, including a tubercle on the dorsal margin of the prezygapophyses and an anteriorly slanting neural spine, suggest close relationships with various basal eusauropods, such as the Middle Jurassic taxa Jobaria tiguidensis and Patagosaurus fariasi. Phylogenetic analyses also support a position close to the base of Eusauropoda. The vertebrae differ from the only other Early Jurassic African sauropod dinosaurs preserving overlapping remains (the Moroccan Tazoudasaurus naimi and South African Pulanesaura eocollum), as well as stratigraphically younger taxa, although we refrain from erecting a new taxon due to the limited nature of the material. These new specimens represent one of the earliest eusauropod taxa and are an important additional data point for elucidating the early evolution of the clade.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cranial anatomy of the iguanodontoid ornithopod Jinzhousaurus yangi from the Lower Cretaceous Yixian Formation of China
Autorzy:
Barrett, P M
Butler, R.J.
Xiao-Lin, W.
Xing, X.
Tematy:
Cretaceous
Yixian Formation
Dinosauria
Jinzhousaurus yangi
paleontology
China
cranial anatomy
Ornithopoda
ornithopod
Liaoning Province
iguanodontoid ornithopod
Lower Cretaceous
dinosaur
Iguanodontia
non-avian dinosaur
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/19937.pdf  Link otwiera się w nowym oknie
Opis:
The Yixian Formation (Lower Cretaceous) of Liaoning Province, China, is justifiably famous for its exceptionally preserved fauna, which includes a remarkable diversity of non−avian dinosaurs. Here, we provide the first detailed description of the cranial skeleton of the iguanodontian ornithopod Jinzhousaurus yangi. Many previously unrecorded features have been recognised, permitting a new and more robust diagnosis for this taxon, which is based on a suite of autapomorphic features. Jinzhousaurus and an unnamed sauropod represent the largest, but some of the least abundant, animals in the Jehol Biota, a situation that contrasts with many other Lower Cretaceous faunas in which large dinosaurs are common faunal components. This rarity may be due to either palaeoenvironmental constraints or taphonomic bias, although it is not possible to choose between these alternatives on the basis of current data.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A reassessment of the purported ankylosaurian dinosaur Bienosaurus lufengensis from the Lower Lufeng Formation of Yunnan, China
Autorzy:
Raven, T.J.
Barrett, P.M.
Xu, X.
Maidment, S.C.R.
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/21669.pdf  Link otwiera się w nowym oknie
Opis:
The earliest definitive ornithischian dinosaurs are from the Early Jurassic and are rare components of early dinosaur faunas. The Lower Lufeng Formation (Hettangian–Sinemurian) of Yunnan Province, China, has yielded a diverse Early Jurassic terrestrial vertebrate fauna. This includes several incomplete specimens have been referred to Ornithischia, including the type specimen of the thyreophoran “Tatisaurus” and other generically indeterminate material. The highly fragmentary Lufeng ornithischian Bienosaurus lufengensis was described briefly in 2001 and identified as an ankylosaurian dinosaur. Recent studies have cast doubt on this hypothesis, however, and given that the referral of Bienosaurus to Ankylosauria would result in an extensive ghost-lineage extending between it and the first definitive eurypodans (ankylosaurs + stegosaurs) in the Middle Jurassic, the holotype specimen is re-examined and re-described. We identify Bienosaurus as a probable thyreophoran dinosaur, although the fragmentary nature of the material and the absence of autapomorphies means that the specimen should be regarded as a nomen dubium.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new centrosaurine from the Late Cretaceous of Alberta, Canada, and the evolution of parietal ornamentation in horned dinosaurs
Autorzy:
Farke, A.A.
Ryan, M.J.
Barrett, P.M.
Tanke, D.H.
Braman, D.R.
Loewen, M.A.
Graham, M.R.
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/22176.pdf  Link otwiera się w nowym oknie
Opis:
In 1916, a centrosaurine dinosaur bonebed was excavated within the Campanian−aged deposits of what is now Dinosaur Provincial Park, Alberta, Canada. Specimens from this now−lost quarry, including two parietals, a squamosal, a skull missing the frill, and an incomplete dentary, were purchased by The Natural History Museum, London. The material was recently reprepared and identified herein as a previously unknown taxon, Spinops sternbergorum gen. et sp. nov. Based upon the available locality data and paleopalynology, the quarry lies in either the upper part of the Oldman Formation or the lower part of the Dinosaur Park Formation. The facial region of the partial skull is similar to putative mature specimens of Centrosaurusspp. and Styracosaurus albertensis, with short, rounded postorbital horncores and a large, erect nasal horncore. Parietal ornamentation is consistent on both known parietals and is unique among ceratopsids. Bilateral, procurved parietal hooks occupy the P1 (medial−most) position on the dorsal surface of the parietal and are very similar to those seen in Centrosaurus apertus. Epiparietals in the P2 or possibly P3 position (lateral to P1) manifest as extremely elongate, caudally directed spikes, unlike the condition in C. apertus, S. albertensis, or any other “derived” centrosaurine. Cladistic analysis suggests that S. sternbergorum is closely related to Centrosaurus and Styracosaurus. Historically, based upon the condition in Styracosaurus and related centrosaurines, it was assumed that the medial−most elongated spikes on centrosaurine parietals correspond to the P3 epiparietal position. The exception illustrated in the new taxon suggests that homologies of epiparietals among basal centrosaurines (e.g., Albertaceratops and Diabloceratops) and derived centrosaurines (e.g., Styracosaurus and “pachyrhinosaurs”) should be reconsidered. The medially−placed, caudally−directed “P3” process of basal centrosaurines may, in fact, be homologous with P2.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological energetics of the golden mouse based on three laboratory diets
Autorzy:
Barrett, G. W.
Stueck, K. L.
Farrell, M. P.
Powiązania:
Acta Theriologica
Opis:
Various energetic parameters of the golden mouse, Ochrotomys nuttalli, were measured for three different laboratory diets. No significant group weight changes due to the effect of diet were found
Oszacowano zmienność parametrów energetycznych Ochrotomys nuttalli (H a r l a n) dla trzech różnych diet laboratoryjnych (Tabela 1). Nie znaleziono statystycznie istotnych zmian w ciężarze między grupami, które mogłyby wyniknąć z wpływu diety
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Comparative accuracy of population estimators for enclosed small mammal populations
Autorzy:
Barrett, G. W.
Farrell, M. P.
Patterson, J. L.
Peterjohn, W. T.
Powiązania:
Acta Theriologica
Opis:
Density estimates for populations of Mus musculus and Microtus pennsylvanicus of known size were obtained from three perturbation studies conducted on enclosed grassland and old-field communities. The comparative accuracy of Jolly's stochastic method, a modified Schnabel census, Overton's method, the calendar-of-catches procedure, and Hayne's removal method was evaluated.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Broadband multi-wavelength properties of M87 during the 2018 EHT campaign including a very high energy flaring episode
Autorzy:
Nickel, L.
Vos, J.
Errando, M.
Niinuma, K.
Maldera, S.
Saturni, F. G.
Satapathy, K.
Brissenden, R.
Impellizzeri, C. M. V.
Issaoun, S.
Kubo, H.
Roache, E.
Moriyama, K.
Berenji, B.
Georgiev, B.
Patel, N.
Lindfors, E.
Kaaret, P.
Foote, J.
Leone, F.
Ceribella, G.
Hadasch, D.
Johnson, M. D.
Hahn, A.
Kluźniak, W.
Negro, M.
Godinović, N.
Okumura, A.
Kim, D.-J.
Barres de Almeida, U.
Chan, C.-k.
Biland, A.
Moran, J. M.
Abhishek, A.
Green, D.
Silvestri, G.
de Naurois, M.
Weintroub, J.
Takahashi, M.
Wach, T.
Honma, M.
Mizuno, T.
Zech, A.
Eatough, R. P.
Stamerra, A.
Mereu, I.
Paredes, J. M.
Suson, D. J.
Lombardi, S.
Inoue, M.
Einecke, S.
Nigro, C.
Ryan, J. L.
Chang, D. O.
Nishijima, K.
Millard, M. J.
Jannuzi, B. T.
McGrath, C. E.
Ward-Thompson, D.
Kramer, M.
Roelofs, F.
Gradetzke, T.
Liu, X.
Santangelo, A.
Kettenis, M.
Brose, R.
Fukami, S.
Doro, M.
Hirota, T.
Matthews, L. D.
Ohm, S.
Fröse, S.
Chen, Y.
Liuzzo, E.
Marchili, N.
Ricarte, A.
Duerr, A.
Ravikularaman, S.
Sánchez-Conde, M.
Huang, Zhiqiu
Shao, L.
Font, L.
Lo, W.-P.
Chatterjee, S.
Grenier, I. A.
Antonelli, L. A.
Giordano, F.
Leitl, F.
Rani, B.
Di Pierro, F.
Colombo, E.
Neilsen, J.
Kosack, K.
Holch, T. L.
Navarro Fuentes, S.
Nanci, C.
Haggard, D.
Berge, D.
Wagner, S. J.
Kravchenko, E. V.
Tavecchio, F.
Ramakrishnan, V.
Li, G.
Tsirou, M.
Schloerb, F. P.
Rottmann, H.
Caraveo, P. A.
Boisson, C.
Miener, T.
Toma, K.
Holder, J.
Sgrò, C.
Bradascio, F.
Grau, R.
Bach, U.
Aguasca-Cabot, A.
Kasai, E.
Barrio, J. A.
Contreras, J. L.
Jiménez-Rosales, A.
Fraga-Encinas, R.
Savolainen, T.
Gargano, F.
Bonino, R.
Panny, S.
Arbet Engels, A.
Narayanan, G.
Cotter, G.
Kramer, J. A.
Mizuno, Y.
O’Brien, S.
Nilsson, K.
Mackey, J.
Bautista, A.
Berti, A.
de Bony de Lavergne, M.
Tanaka, T.
Brown, A.
Germani, S.
Cui, Y.-Z.
Benson, B. A.
Falcone, A. D.
Babić, A.
Cerasole, D.
Fariña, L.
Zhao, R.
Lang, R. G.
Özel, F.
Kim, J.
Vassiliev, V. V.
Lamastra, A.
Ball, D.
Chen, M.-T.
Johnson, M. N.
Humensky, T. B.
Ernenwein, J.-P.
Kushida, J.
Nakamura, M.
Prada Moroni, P. G.
Santander, M.
Dazzi, F.
Paoletti, R.
La Bella, N.
Sohn, B. W.
Fuentes, A.
Celic, J.
Terauchi, K.
Myserlis, I.
Stanway, J. S.
Bronzwaer, T.
Cho, I.
Torres, D. F.
Ro, H.
Barrett, J.
Elsaesser, D.
Blanch, O.
Wielgus, M.
Sitarek, J.
Djuvsland, J.
Sánchez-Portal, M.
Khatoon, R.
Funk, S.
Loparco, F.
Reville, B.
Majumdar, P.
Otero-Santos, J.
Chatterjee, K.
Natarajan, I.
Hinrichs, C. E.
Zhao, G.-Y.
Torne, P.
Gaug, M.
Omodei, N.
Castro-Tirado, A. J.
Baloković, M.
Cerruti, M.
Mondal, H. A.
Bruel, P.
Pensec, U.
Ohtani, Y.
lackburn, L.
Tiede, P.
Park, J.
Kramer, C.
Hesper, R.
Mus, A.
Davelaar, J.
Machado de Oliveira Fraga, B.
Pirola, G.
Liu, J.
Ford, N. M.
Ford, H. A.
Small, D.
Dihingia, I. K.
De Lotto, B.
Kumar, S.
Nagai, H.
Kerszberg, D.
Nievas Rosillo, M.
Tazaki, F.
Martí-Vidal, I.
Persic, M.
Saz Parkinson, P. M.
Gasbarra, C.
Splettstoesser, M.
Kobayashi, Y.
Tetarenko, A. J.
Leuschner, F.
Aschersleben, J.
Tutone, A.
Malyshev, D.
Schäfer, J.
De Laurentis, M.
Nikolić, L.
Yamaguchi, P.
Righi, C.
Suzuki, H.
Goswami, P.
Furniss, A.
Keating, G. K.
Prather, B.
Di Tria, R.
Wong, G. N.
Porth, O.
de Ona Wilhelmi, E.
Maneva, G.
Chen, Z.
Baczko, A.-K.
Mariotti, M.
Strzys, M.
Barbosa Martins, V.
Oh, J.
Zensus, J. A.
Krichbaum, T. P.
Wierzcholska, A.
Li, B.
Principe, G.
D’Elia, V.
Batzofin, R.
Sharma, A.
Gold, R.
Yadlapalli, N.
Longo, F.
Manganaro, M.
Bauböck, M.
Kleiner, T. K.
Lovellette, M. N.
Giesbrecht Paiva, J. G.
Kocherlakota, P.
Schmuckermaier, F.
Becherini, Y.
Boyce, H.
Mazziotta, M. N.
Fomalont, E.
Fukazawa, Y.
Martínez, M.
Lobanov, A. P.
Krennrich, F.
Suutarinen, S.
Conway, J. E.
Verna, G.
Bouman, K. L.
Lindqvist, M.
Farah, J.
Le Stum, S.
Xia, B.
Zhang, H.
Carretero-Castrillo, M.
Reis, I.
Herrera Llorente, J.
Menchiari, S.
Sun, H.
Takahashi, T.
Moscibrodzka, M.
Kuss, M.
Anantua, R.
Marx, R.
Psaltis, D.
Borowska, J.
Yan, H.
Morselli, A.
Ashkar, H.
Podobnik, F.
Valverde, J.
Trippe, S.
Lonsdale, C. J.
Zhao, S.-S.
Cavazzuti, E.
Mitchell, A.
Panter, M.
Salzmann, H.
Foschi, M.
Jeter, B.
Stawarz, Łukasz
Busetto, G.
Toscano, T.
Sheridan, C.
Gómez-Ruiz, A. I.
Hassan, T.
D’Amico, G.
Jorstad, S.
Li, Z.
Yuan, Y.-F.
Olivares, H.
PopStefanija, A.
Schonfeld, J.
Katarzyński, K.
van Eldik, C.
Yfantis, A.
López-Moya, M.
Mazin, D.
Carosi, R.
Cheong, W.-Y.
Wang, N.
Takeishi, R.
Domínguez, A.
Dominis Prester, D.
Artero, M.
García, R.
Sahakian, V.
Müller, C.
Streil, K.
López-Coto, R.
Hanlon, W.
Roshanineshat, A.
Aniello, T.
Vazquez Acosta, M.
Dexter, J.
Matsushita, S.
Njoh Ekoume, T.
Dinesh, A.
Jung-Richardt, I.
Tilanus, R. P. J.
Burelli, I.
Emami, R.
Shapopi, J. N. S.
Yu, W.
Dorner, D.
Jiménez Martínez, I.
Sciaccaluga, A.
Schüssler, F.
Vovk, I.
Sakai, N.
Arcaro, C.
Grolleron, G.
Lang, M. J.
Dempsey, J.
Heckmann, L.
Kertzman, M.
Washington, J. E.
Martí-Devesa, G.
Sánchez, S.
Ikeda, S.
Marrone, D. P.
Yuan, F.
Lisakov, M.
MacDonald, N. R.
Sol, H.
Di Lalla, N.
Molero González, M.
Blandford, R. D.
Mizuno, I.
Garczarczyk, M.
Musoke, G.
Holler, M.
Pesce, D. W.
Orlando, E.
Hays, E.
Cecil, R.
Algaba, J. C.
Pen, U.-L.
Lowitz, A. E.
Cristarella Orestano, P.
Hrupec, D.
Fromm, C. M.
Azulay, R.
Conroy, N. S.
Koch, P. M.
Alberdi, A.
Roy, A. L.
Pihet, M.
Moralejo, A.
Young, A.
Da Vela, P.
Batković, I.
Gu, M.
Markoff, S.
Fontaine, G.
Titus, M.
Kuo, C.-Y.
Michail, J.
Chen, A.
Wiik, K.
Neustroev, V.
Lico, R.
Montanari, A.
Sembroski, G. H.
Besenrieder, J.
Desvignes, G.
Lenain, J.-P.
Moulin, E.
Kofuji, Y.
Carosi, A.
Moriarty, P.
Miranda, J. M.
van Langevelde, H. J.
Abe, S.
van Rossum, D. R.
Böttcher, M.
Ruszczyk, C.
Covino, S.
Bower, G. C.
Ripperda, B.
Ong, R. A.
Priyadarshi, C.
Tucci, J. V.
Temnikov, P.
Meyer, M.
Blundell, R.
Koay, J. Y.
Di Venere, L.
Damascene Mbarubucyeye, J.
Moderski, R.
O’Brien, P.
Mannheim, K.
Jones, A. C.
Doeleman, S. S.
Cortina, J.
Turk, M.
Makariev, M.
Huang, C.-W. L.
Prandini, E.
Pohl, M.
Wu, Q.
Heumann, D.
Reynolds, P. T.
Freeman, W. T.
Raymond, A. W.
Franckowiak, A.
Truzzi, S.
Monzani, M. E.
Loinard, L.
Friberg, P.
Giliberti, M.
Mao, J.
Jormanainen, J.
James, D. J.
Molina, E.
Abhir, J.
Gentaz, O.
Okino, H.
Rao, R.
Ribeiro, D.
Crawford, T. M.
Gómez, J. L.
Chael, A.
Deane, R.
Lyard, E.
van Scherpenberg, J.
Sadeh, I.
Ciprini, S.
Maier, G.
Imazawa, R.
Mas-Aguilar, A.
Pita, S.
Liu, Z.
Ubach, S.
Donini, A.
Savchenko, S. S.
Dhruv, V.
Schmidt, K.
Cifuentes, A.
Kundu, A.
Palumbo, D. C. M.
Green, J. G.
Zacharias, M.
Lundy, M.
Sasada, M.
Niemiec, J.
Kawashima, T.
Bonnoli, G.
Acciari, V. A.
Filippos Paraschos, G.
Günther, P.
Will, M.
Glawion, D.
Cutini, S.
Peresano, M.
Feng, Q.
Chai, Y.
Traianou, E.
Hada, K.
Luashvili, A.
Ishio, K.
Sahakyan, N.
Quinn, J.
Paneque, D.
Kerby, S.
Kieda, D.
Saha, L.
Adams, C. B.
Glicenstein, J. F.
Gammie, C. F.
Acharyya, A.
Broguiere, D.
Wajima, K.
Lu, R.-S.
Sasaki, M.
Delfino, M.
Carlstrom, J. E.
Reimer, O.
Steppa, C.
Sosapanta Salas, L. D.
Lemière, A.
Bruno, B.
Bigongiari, C.
Marscher, A. P.
Giroletti, M.
Fortson, L.
Ros, E.
Cameron, R. A.
Ostrowski, Michał
Taylor, A. M.
Vecchi, M.
Lindahl, G.
Jung, T.
Koyama, S.
Casanova, S.
Baxter, J.
Schweizer, T.
Nowak, M. A.
Martínez-Chicharro, M.
Quirrenbach, A.
Foffano, L.
Witzel, G.
Britzen, S.
Fegan, S. J.
Ruiz, I.
Backes, M.
Bošnjak, Ž.
De Angelis, A.
Yamamoto, T.
Schutte, H. M.
Liu, K.
Miceli, D.
Menten, K. M.
Christian, P.
Zhong, W.
Campoy-Ordaz, A.
Terzić, T.
Ragan, K.
Joshi, A. V.
Giglietto, N.
D’Ammando, F.
Fattorini, A.
Walter, R.
Haerer, L.
Teshima, M.
Bandyopadhyay, B.
Bednarek, W.
Agudo, I.
Gurwell, M. A.
Ma, J.
Falcke, H.
de Menezes, R.
Shang, R.
Moghadam, M. O.
Bintley, D.
Zaharijas, G.
Medeiros, L.
Bulik, T.
Kino, M.
Komin, Nu.
Loporchio, S.
Nathanail, A.
Ruiz-Velasco, E.
Mirabal, N.
Lee, S.-S.
Trent, T.
Bangale, P.
Bernardini, E.
Bissaldi, E.
Noda, K.
Hughes, D. H.
Parsons, H.
Reimer, A.
Becerra González, J.
Gabici, S.
Kaur, A.
Żywucka, N.
Piétu, V.
Tajima, H.
Bronzini, E.
Ansoldi, S.
Kayanoki, T.
Lemoine-Goumard, M.
Sánchez-Argüelles, D.
Asano, K.
Siskind, E. J.
Vigorito, C. F.
Strom, D.
Mooney, C. L.
Viale, I.
Müller, H.
Nakamori, T.
Rico, J.
Karuppusamy, R.
Asada, K.
Chand, T.
Rygl, K. L. J.
Fusco, P.
Mukherjee, R.
Lorini, A.
Gliwny, P.
Spinelli, P.
Wagner, J.
Khélifi, B.
Oyama, T.
Ni, C.
Bellazzini, R.
Bouyahiaoui, M.
Jamrozy, Marek
Yonekura, Y.
Crew, G. B.
Devin, J.
Pueschel, E.
Younsi, Z.
Sawada-Satoh, S.
Jin, W.
Ventura, S.
Bartkoske, J. T.
Mender, S.
Williams, D. A.
Shen, Z.
Levis, A.
Goddi, C.
Kluge, G. W.
Heß, B.
Nagar, N. M.
Strišković, J.
Ning, W.
Michelson, P. F.
Chibueze, O.
Chandra, S.
SooHoo, J.
Alef, W.
Wardle, J.
Wunderlich, C.
Fish, V. L.
Spencer, S.
Rainò, S.
Talluri, A. K.
Huang, L.
Sobczynska, D.
Ren, H.
Rezzolla, L.
Liu, Q.
Nozaki, S.
Paiano, S.
Horns, D.
Nair, D. G.
Mangano, S.
Ribó, M.
Benbow, W.
Roellinghoff, G.
Pu, H.-Y.
Morcuende, D.
Spolon, A.
Láinez, M.
Mirzoyan, R.
Christiansen, J. L.
Rudak, B.
Liodakis, I.
Akiyama, K.
Rawlings, M. G.
Gasparyan, S.
Escudero, J.
Dzib, S. A.
Bremer, M.
Mulaudzi, W.
Larsson, S.
Sliusar, V.
Ho, L. C.
Delgado, J.
Dmytriiev, A.
Broderick, A. E.
Cheung, C. C.
Aharonian, F.
Cheng, X.
Chibueze, J.
Schuster, K.-F.
Burger-Scheidlin, C.
Yoon, D.
Sabri, K.
Terrier, R.
Feijen, K.
Bolmont, J.
Galison, P.
Souccar, K.
Ait Benkhali, F.
Kim, J.-Y.
Ho, P.
Montgomery, J.
Cui, L.
Korzoun, N.
Bernete, J.
García López, R. J.
Dahale, R.
Saito, T.
Romero-Cañizales, C.
Cruz-Osorio, A.
Pühlhofer, G.
Vitale, V.
Wong, S. L.
van Bemmel, I.
López-Oramas, A.
Zdziarski, A. A.
Wharton, R.
Tluczykont, M.
Wondrak, M. F.
Jankowsky, F.
Horan, D.
Zhang, S.
Delgado Mendez, C.
Hervet, O.
Janssen, M.
Bustamante, S.
Schubert, J. L.
Suda, Y.
Rieger, F.
Kouch, P. M.
Wang, J.
Mohrmann, L.
Jiang, W.
Opis:
Context. The nearby elliptical galaxy M87 contains one of only two supermassive black holes whose emission surrounding the event horizon has been imaged by the Event Horizon Telescope (EHT). In 2018, more than two dozen multi-wavelength (MWL) facilities (from radio to γ-ray energies) took part in the second M87 EHT campaign. Aims. The goal of this extensive MWL campaign was to better understand the physics of the accreting black hole M87*, the relationship between the inflow and inner jets, and the high-energy particle acceleration. Understanding the complex astrophysics is also a necessary first step towards performing further tests of general relativity. Methods. The MWL campaign took place in April 2018, overlapping with the EHT M87* observations. We present a new, contemporaneous spectral energy distribution (SED) ranging from radio to very high-energy (VHE) γ-rays as well as details of the individual observations and light curves. We also conducted phenomenological modelling to investigate the basic source properties. Results. We present the first VHE γ-ray flare from M87 detected since 2010. The flux above 350 GeV more than doubled within a period of ≈36 hours. We find that the X-ray flux is enhanced by about a factor of two compared to 2017, while the radio and millimetre core fluxes are consistent between 2017 and 2018. We detect evidence for a monotonically increasing jet position angle that corresponds to variations in the bright spot of the EHT image. Conclusions. Our results show the value of continued MWL monitoring together with precision imaging for addressing the origins of high-energy particle acceleration. While we cannot currently pinpoint the precise location where such acceleration takes place, the new VHE γ-ray flare already presents a challenge to simple one-zone leptonic emission model approaches, and it emphasises the need for combined image and spectral modelling.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Broadband multi-wavelength properties of M87 during the 2017 Event Horizon Telescope campaign
Autorzy:
Saturni, F. G.
Trippe, Sascha
Yonekura, Yoshinori
Cui, Y. -Z.
Fuentes, Antonio
Šnidarić, I.
Pühlhofer, G.
Schuster, Karl-Friedrich
Artero, M.
Angüner, E. O.
Vovk, I.
Liu, Kuo
Joshi, V.
Zhao, Shan-Shan
Berti, A.
Pueschel, E.
Temnikov, P.
Wang, Na
Ostrowski, Michał
Roache, E.
Carlstrom, John E.
Kobayashi, Y.
Huber, D.
Kluźniak, W.
Hughes, David H.
Fegan, S.
Lamastra, A.
Oakes, L.
Prado, R. R.
Jiménez-Rosales, Alejandra
Neri, Roberto
Senniappan, M.
Ribeiro, D.
Mares, A.
Depaoli, D.
Alef, Walter
Curyło, M.
Baghmanyan, V.
Noel, Angel
Emery, G.
Patel, Nimesh
Jankowsky, D.
Mizuno, Yosuke
Meintjes, P. J.
Lenain, J. -P.
Park, J.
Bronzwaer, Thomas
Sánchez-Arguelles, David
Moore, C.
Holler, M.
Kieda, D.
Lemoine-Goumard, M.
Nigro, C.
de Almeida, U. Barres
Jormanainen, J.
Anczarski, J.
Kino, M.
Kettenis, Mark
Tetarenko, Alexandra J.
Vitale, V.
Wagner, S. J.
Kuo, Cheng-Yu
Soohoo, Jason
Rinchiuso, L.
Liu, Xiang
Mejías, Alejandro Mus
Contreras, J. L.
Rudak, B.
Hahn, J.
Porth, Oliver
Pötzl, Felix M.
Roelofs, Freek
Rygl, Kazi L. J.
Young, Ken
Covino, S.
Feng, Q.
Chen, Ming-Tang
Nakamura, Masanori
Cotter, G.
Kastendieck, M. A.
Sembroski, G. H.
Palatiello, M.
Paoletti, R.
O'Brien, P.
Savchenko, S. S.
Brun, F.
Kramer, Carsten
Werner, F.
Baczko, Anne-Kathrin
Menchiari, S.
Rulten, C.
Hughes, G.
Verguilov, V.
Hinton, J. A.
Barbosa Martins, V.
Kravchenko, E. V.
Minev, M.
Sobczynska, D.
Lico, Rocco
Gentaz, Olivier
Dempsey, Jessica
Broderick, Avery E.
Barnard, M.
Rhode, W.
Prokhorov, D. A.
Plambeck, Richard
Aharonian, F.
Moriarty, P.
de Clairfontaine, G. Fichet
Terrier, R.
Rawlings, Mark G.
Komossa, S.
Steenkamp, R.
Moderski, R.
Ramakrishnan, V.
Taylor, A. M.
Kajiwara, Y.
Mićanović, S.
Longo, F.
Gent, A.
Boyce, Hope
Giuri, C.
Zacharias, M.
Nayerhoda, A.
Kushida, J.
Peron, G.
Yuan, Feng
Wajima, Kiyoaki
Haggard, D.
Jung, Taehyun
Lang, M. J.
Kostunin, D.
Hahn, A.
Hadasch, D.
Terzić, T.
Lypova, I.
Sailer, S.
Steinmassl, S.
Bouman, Katherine L.
Donini, A.
Reynolds, P. T.
Mizuno, Izumi
Kasai, E.
Roshanineshat, Arash
Khangulyan, D.
Honma, Mareki
Murach, T.
Janssen, Michael
Benbow, W.
Colombo, E.
Ubach, S.
Neilsen, J.
Cui, Lang
Christiansen, J. L.
van Rossum, Daniel R.
Mohamed, M.
Tilanus, Remo P. J.
Kertzman, M.
Blanch, O.
Reynolds, M. T.
Majumdar, J.
Rezzolla, Luciano
Ong, R. A.
Schutte, H. M.
Rowell, G.
Marx, R.
Azulay, Rebecca
Principe, G.
Sanchez, D. A.
di Venere, L.
Delgado Mendez, C.
Asada, K.
Gold, Roman
Tiziani, D.
Hrupec, D.
Meyer, M.
Oka, T.
Otero-Santos, J.
Moroni, P. G. Prada
Ribó, M.
Will, M.
Damascene Mbarubucyeye, J.
Molina, E.
Farah, Joseph
Barrio, J. A.
Benkhali, F. Ait
Weinstein, A.
Gurwell, Mark
Ansoldi, S.
Tavernier, T.
Jannuzi, Buell T.
Mackey, J.
Ho, Paul
Dazzi, F.
Eichhorn, F.
Holder, J.
Seglar-Arroyo, M.
Biland, A.
Karami, Mansour
Inoue, Makoto
Font, L.
Daniel, M. K.
Reichherzer, P.
Zorn, J.
Baloković, M.
Patel, S.
Nilsson, K.
Li, Zhiyuan
Babić, A.
Kramer, Michael
Heckmann, L.
Godinović, N.
Iwamura, Y.
Righi, C.
Schloerb, F. Peter
Farrell, K. A.
Fruck, C.
Lobanov, Andrei P.
Poireau, V.
Majumdar, P.
Titus, Michael
Zensus, J. Anton
Kim, J. -Y.
Matsushita, Satoki
García, Roberto
Kaur, A.
D'Elia, V.
Sasada, M.
Caroff, S.
Watson, J.
Ward-Thompson, Derek
Mirzoyan, R.
Menten, Karl M.
Ho, Luis C.
Mender, S.
Tsirou, M.
Fonseca, M. V.
Takahashi, T.
Bernardini, E.
Eatough, Ralph P.
Vazquez Acosta, M.
Hoang, J.
Nishijima, K.
Ortiz-León, Gisela N.
Brill, A.
Santangelo, A.
Gottschall, D.
Mukherjee, R.
Jankowsky, F.
Okino, Hiroki
Bigongiari, C.
Davids, I. D.
Falcone, A. D.
Wadiasingh, Z.
Herrera, J.
Green, J. G.
Dexter, Jason
Acciari, V. A.
Ricarte, Angelo
Giroletti, M.
Williamson, T. J.
Einecke, S.
Preciado-López, Jorge A.
Pavletić, L.
Devin, J.
Panny, S.
Wu, Qingwen
da Vela, P.
Kim, Dong-Jin
Steppa, C.
Pu, Hung-Yi
Ashkar, H.
Kaaret, P.
Bryan, M.
Haupt, M.
Moriyama, Kotaro
Sahakyan, N.
van Rensburg, C.
Armstrong, T.
Grondin, M. -H.
Ikeda, Shiro
Glawion, D.
Pen, Ue-Li
Algaba, J. C.
Gómez, José L.
Wielgus, Maciek
Zhu, S. J.
Li, Yan-Rong
Lundy, M.
Oyama, Tomoaki
Baquero, A.
Brinkerink, Christiaan D.
Shiningayamwe, K.
Johnson, Michael D.
Sánchez, Salvador
Simoni, R.
Ceribella, G.
Gu, Minfeng
Remy, Q.
Ni, Chunchong
Musoke, Gibwa
Zouari, S.
Ripperda, Bart
Lelas, D.
Machado de Oliveira Fraga, B.
Miener, T.
Falcke, Heino
Ball, David
Gabici, S.
Prandini, E.
Brissenden, Roger
Marcowith, A.
Galison, Peter
Paredes, J. M.
Bower, Geoffrey C.
Nagai, Hiroshi
Medeiros, Lia
Perennes, C.
de Angelis, A.
Narayan, Ramesh
Small, Des
Giordano, F.
Rugliancich, A.
Williams, D. A.
Georgiev, Boris
Fromm, Christian M.
Schwanke, U.
Niederwanger, F.
Büchele, M.
Gómez-Ruiz, Arturo I.
Koay, Jun Yi
Quinn, J.
Savolainen, Tuomas
Pesce, Dominic W.
Sun, He
Punch, M.
Nievas-Rosillo, M.
Sakurai, S.
Lindfors, E.
Antonelli, L. A.
Peyaud, B.
Broguiere, Dominique
Mohrmann, L.
Sun, L.
Maraschi, L.
Benson, Bradford A.
Moreno, V.
Cortina, J.
Besenrieder, J.
Rogers, Alan
Desvignes, Gregory
Hoischen, C.
Chilingarian, A.
Morcuende, D.
Moran, James M.
Suda, Y.
Ros, Eduardo
Kubo, H.
Zanin, R.
Karjalainen, M.
Glicenstein, J. F.
Żywucka, N.
Young, André
Yusafzai, A.
Surić, T.
Ventura, S.
Carosi, A.
Niinuma, Kotaro
Nakashima, K.
Huang, Chih-Wei L.
di Pierro, F.
Jamrozy, Marek
Popstefanija, Aleksandar
Leone, F.
Tomankova, L.
Humensky, T. B.
Chan, Chi-Kwan
Odaka, H.
Doeleman, Sheperd S.
Pita, S.
Vasileiadis, G.
Gliwny, P.
Seyffert, A. S.
Satalecka, K.
Chatterjee, Shami
Delgado, J.
Matthews, Lynn D.
Natarajan, Iniyan
Tosti, L.
White, R.
Tiede, Paul
Dominis Prester, D.
Özel, Feryal
Giunti, L.
Maneva, G.
Reimer, A.
Giavitto, G.
de Naurois, M.
Sohn, Bong Won
Sitarek, J.
Dorner, D.
Cordes, James M.
van Bemmel, Ilse
Wharton, Robert
Dyks, J.
Chandra, S.
Reimer, O.
Torne, Pablo
Funk, S.
Cikota, S.
Shang, R.
Lonsdale, Colin
Sahakian, V.
Deane, Roger
Shafi, N.
Green, D.
Egberts, K.
Trichard, C.
Pohl, M.
Friberg, Per
Lamanna, G.
Feijen, K.
Schwemmer, S.
Vigorito, C. F.
Davelaar, Jordy
Lu, R. -S.
Giglietto, N.
Jorstad, S.
Liuzzo, Elisabetta
Martí-Vidal, Iván
Noutsos, Aristeidis
Jin, W.
Blundell, Raymond
Paneque, D.
Dewilt, P.
Chael, Andrew
Konno, R.
Busetto, G.
van Soelen, B.
Rao, Ramprasad
Tuffs, R.
Toma, Kenji
Moscibrodzka, Monika
Brun, P.
Spencer, S.
Delfino, M.
Davies, J.
Boisson, C.
Roy, Alan L.
Ferrara, G.
van der Walt, D. J.
Williamson, K. E.
Ramazani, V. Fallah
Kerszberg, D.
Pfrang, K.
Karuppusamy, Ramesh
Doroshenko, V.
Paiano, S.
O'Brien, S.
Liu, Jun
Kreter, M.
Goddi, C.
Jung-Richardt, I.
Nozaki, S.
Kawashima, T.
Katarzyński, K.
Katz, U.
Lucchini, M.
Marchili, Nicola
Dmytriiev, A.
Hirota, Tomoya
Barrett, John
Rieger, F.
Doro, M.
Cerruti, M.
Britzen, Silke
Sasaki, M.
Truzzi, S.
Do Souto Espiñeira, E.
Lo, Wen-Ping
Chand, T.
Prather, Ben
Maier, G.
Niemiec, J.
Yuan, Ye-Fei
Gasparyan, S.
Alberdi, Antxon
Schleicher, B.
Adams, C. B.
Ro, Hyunwook
de Ona Wilhelmi, E.
Manganaro, M.
Backes, M.
Berge, D.
Nathanail, Antonios
Piétu, Vincent
Dirson, L.
Vuillaume, T.
Inoue, S.
de Laurentis, Mariafelicia
Peñil, P.
Khélifi, B.
Engels, A. Arbet
Fortson, L.
Jeter, Britton
Schweizer, T.
Chen, A.
García López, R. J.
Becherini, Y.
Parsons, R. D.
Rico, J.
Marrone, Daniel P.
Stegmann, C.
Jouvin, L.
de Lotto, B.
Marandon, V.
Elsaesser, D.
Rose, Mel
Holch, T. L.
Blackburn, Lindy
Mao, Jirong
Tluczykont, M.
Markoff, S.
Jiménez, I.
Tazaki, Fumie
Keating, G.
Traianou, Efthalia
D'Ammando, F.
Sakai, Nobuyuki
Ragan, K.
Djannati-Ataï, A.
Moulin, E.
Prokoph, H.
Hassan, T.
Martí-Devesa, G.
Tavecchio, F.
Ohm, S.
Zarić, D.
Loporchio, S.
Gallant, Y. A.
Komin, Nu.
Gammie, Charles F.
Neustroev, V.
Palumbo, Daniel C. M.
Santander, M.
Martínez, M.
Chromey, A. J.
Fattorini, A.
Mariotti, M.
Uchiyama, Y.
Bernardos, M.
Marscher, Alan P.
Marchegiani, P.
Barnacka, Anna
Rauth, R.
Younsi, Ziri
López-Coto, R.
Ohtani, Y.
Quirrenbach, A.
Kumar, S.
Vanzo, G.
Klepser, S.
Lee, S. -S.
de Lavergne, M. De Bony
Levy, C.
Noda, K.
Montanari, A.
Kofuji, Yutaro
Völk, H. J.
Nieto, D.
Bednarek, W.
Asano, K.
Takahashi, M.
Wex, Norbert
van Langevelde, Huib Jan
Jiang, Wu
Hecht, Michael H.
Issaoun, Sara
Fish, Vincent L.
López-Oramas, A.
Lindahl, Greg
Bhattacharyya, W.
Shao, Lijing
Böttcher, M.
Duffy, C.
Hörbe, M.
Bremer, Michael
Tutone, A.
Crew, Geoffrey B.
Nowak, M. A.
Saito, T.
Müller, Cornelia
Sawada-Satoh, Satoko
Renaud, M.
Muller, J.
Mazin, D.
Mallamaci, M.
Akiyama, Kazunori
Fukami, S.
Inada, T.
Bonnoli, G.
Deil, C.
Koyama, Shoko
Hesper, Ronald
Morris, P.
Piel, Q.
Gaug, M.
Ford, H. Alyson
Bulik, T.
Horns, D.
Koch, Patrick M.
Makariev, M.
Casanova, S.
van Scherpenberg, J.
Chesler, Paul M.
Hofmann, W.
Otte, A. N.
Ruiz-Velasco, E.
Scalici, M.
Strom, D.
Ishio, K.
Vincent, P.
Becerra González, J.
Wardle, John
Bernlöhr, K.
Bellizzi, L.
Lombardi, S.
Kosack, K.
Yoon, Doosoo
Moretti, E.
Romoli, C.
Zdziarski, A. A.
Wunderlich, C.
Christian, Pierre
Lauer, Tod R.
Persic, M.
Wagner, Jan
Spolon, A.
Chai, Y.
Bintley, Dan
Narayanan, Gopal
Specovius, A.
Spir-Jacob, M.
Trent, Tyler
Loinard, Laurent
Nagar, Neil M.
Byun, Do-Young
Anantua, Richard
Chen, Yongjun
Conway, John E.
Ruszczyk, Chet
Weintroub, Jonathan
Lemière, A.
Hervet, O.
Jardin-Blicq, A.
Stawarz, Łukasz
Zargaryan, D.
Huang, Lei
James, David J.
Hada, K.
López-Moya, M.
Bolmont, J.
Sinha, A.
Miranda, J. M.
Lohse, T.
Teshima, M.
Cruz-Osorio, Alejandro
Ryan, J. L.
MacDonald, Nicholas R.
Furniss, A.
Venter, C.
Colak, S. M.
Finley, J. P.
Malyshev, D.
Olivares, Héctor
D'Amico, G.
Breuhaus, M.
Rottmann, Helge
Ndiyavala, H.
Veh, J.
Kim, Jongsoo
Crawford, Thomas M.
Kim, Junhan
Abdalla, H.
Fiasson, A.
Chatterjee, Koushik
Psaltis, Dimitrios
Wong, Yu Wun
Stamerra, A.
Strzys, M.
Priyadarshi, C.
Vink, J.
Capasso, M.
Bošnjak, Ž.
Zhao, Guang-Yao
Garczarczyk, M.
Wierzcholska, A.
Adam, R.
Puljak, I.
Raymond, Alexander W.
Moralejo, A.
Lindqvist, Michael
van Eldik, C.
Carosi, R.
Mannheim, K.
Olivera-Nieto, L.
Bylund, T.
Levis, Aviad
Zech, A.
Fraga-Encinas, Raquel
Arcaro, C.
Miceli, D.
Bi, B.
Boland, Wilfred
Armand, C.
Donath, A.
Baack, D.
Füßling, M.
Fomalont, Ed
Maurin, G.
Krichbaum, T. P.
Fontaine, G.
Richards, G. T.
Shen, Zhiqiang
Ernenwein, J. -P.
Hermann, G.
Schmidt, K.
Wong, George N.
Cho, Ilje
Maggio, C.
Saha, L.
Errando, M.
Hütten, M.
Sol, H.
Panter, M.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
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