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Wyszukujesz frazę "Hodges, P." wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
A mysterious giant ichthyosaur from the lowermost Jurassic of Wales
Autorzy:
Martin, J.E.
Vincent, P.
Suan, G.
Sharpe, T.
Hodges, P.
Williams, M.
Howells, C.
Fischer, V.
Tematy:
ichthyosaur
deposit
morphotype
Jurassic
Wales
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/23272.pdf  Link otwiera się w nowym oknie
Opis:
Ichthyosaurs rapidly diversified and colonised a wide range of ecological niches during the Early and Middle Triassic period, but experienced a major decline in diversity near the end of the Triassic. Timing and causes of this demise and the subsequent rapid radiation of the diverse, but less disparate, parvipelvian ichthyosaurs are still unknown, notably because of inadequate sampling in strata of latest Triassic age. Here, we describe an exceptionally large radius from Lower Jurassic deposits at Penarth near Cardiff, south Wales (UK) the morphology of which places it within the giant Triassic shastasaurids. A tentative total body size estimate, based on a regression analysis of various complete ichthyosaur skeletons, yields a value of 12-15 m. The specimen is substantially younger than any previously reported last known occurrences of shastasaurids and implies a Lazarus range in the lowermost Jurassic for this ichthyosaur morphotype.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020
Autorzy:
Saturni, F. G.
Noda, K.
Di Venere, L.
Karjalainen, M.
Surić, T.
Ventura, S.
Pearson, T. J.
Bednarek, W.
Delgado Mendez, C.
Asano, K.
Šnidarić, I.
Oka, T.
Otero-Santos, J.
Hrupec, D.
Ribó, M.
Takahashi, M.
Will, M.
Artero, M.
Vovk, I.
Leone, F.
Lähteenmäki, A.
López-Oramas, A.
Readhead, A. C. S.
Bhattacharyya, W.
Gliwny, P.
Berti, A.
Barrio, J. A.
Molina, E.
Satalecka, K.
Delgado, J.
Temnikov, P.
Tammi, J.
Ansoldi, S.
Tosti, L.
Tutone, A.
Kobayashi, Y.
Saito, T.
Hodges, M.
Dazzi, F.
Dominis Prester, D.
Lamastra, A.
Maneva, G.
Barres de Almeida, U.
Biland, A.
Font, L.
Mazin, D.
Mallamaci, M.
Nilsson, K.
Fukami, S.
Babić, A.
Inada, T.
Sitarek, J.
Dorner, D.
Heckmann, L.
Reeves, R.
Godinović, N.
Bonnoli, G.
Iwamura, Y.
Depaoli, D.
Righi, C.
Fruck, C.
Majumdar, P.
Gaug, M.
Cikota, S.
Tornikoski, M.
Hovatta, T.
D'Elia, V.
Makariev, M.
Green, D.
Mirzoyan, R.
van Scherpenberg, J.
Fallah Ramazani, V.
Mender, S.
Fonseca, M. V.
Nigro, C.
Vigorito, C. F.
Jormanainen, J.
Prada Moroni, P. G.
Bernardini, E.
Giglietto, N.
Kiehlmann, S.
Strom, D.
Vazquez Acosta, M.
Ishio, K.
Hoang, J.
Nishijima, K.
Paneque, D.
Becerra González, J.
Vitale, V.
Suutarinen, S.
Lombardi, S.
Bellizzi, L.
Busetto, G.
Moretti, E.
Contreras, J. L.
Arbet Engels, A.
Delfino, M.
Wunderlich, C.
Covino, S.
Ferrara, G.
Max-Moerbeck, W.
Bigongiari, C.
Kerszberg, D.
Da Vela, P.
Herrera, J.
Green, J. G.
Paiano, S.
Palatiello, M.
Paoletti, R.
Persic, M.
Acciari, V. A.
Spolon, A.
Chai, Y.
Nozaki, S.
Pavletić, L.
Menchiari, S.
Verguilov, V.
Doro, M.
Cerruti, M.
Sahu, D. K.
Truzzi, S.
Do Souto Espiñeira, E.
Sahakyan, N.
Minev, M.
Sobczynska, D.
López-Moya, M.
Gasparyan, S.
Schleicher, B.
Hada, K.
Miranda, J. M.
Manganaro, M.
Teshima, M.
Rhode, W.
Colak, S. M.
Baquero, A.
Inoue, S.
Peñil, P.
De Lotto, B.
D'Amico, G.
Ceribella, G.
Batković, I.
Kajiwara, Y.
Mićanović, S.
Schweizer, T.
García López, R. J.
Longo, F.
Rico, J.
Lelas, D.
Jouvin, L.
Kushida, J.
Elsaesser, D.
Machado de Oliveira Fraga, B.
Stamerra, A.
Strzys, M.
Priyadarshi, C.
Miener, T.
Jiménez, I.
de Palma, F.
Prandini, E.
Paredes, J. M.
Hahn, A.
Bošnjak, Ž.
Hadasch, D.
Garczarczyk, M.
D'Ammando, F.
Perennes, C.
Terzić, T.
Giordano, F.
Rugliancich, A.
Puljak, I.
Moralejo, A.
Mannheim, K.
Carosi, R.
Tavecchio, F.
Donini, A.
Niinuma, K.
Zarić, D.
Loporchio, S.
De Angelis, A.
Miceli, D.
Neustroev, V.
Björklund, I.
Martínez, M.
Sakurai, S.
Fattorini, A.
Colombo, E.
Antonelli, L. A.
Di Pierro, F.
Lindfors, E.
Ubach, S.
Baack, D.
Mariotti, M.
Bernardos, M.
Maraschi, L.
Barnacka, Anna
López-Coto, R.
Moreno, V.
Ohtani, Y.
Schmidt, K.
Blanch, O.
Cortina, J.
Besenrieder, J.
Vanzo, G.
Maggio, C.
Chilingarian, A.
Morcuende, D.
Saha, L.
Hütten, M.
Suda, Y.
Kubo, H.
Opis:
We report multiwavelength observations of the gravitationally lensed blazar QSO B0218+357 in 2016–2020. Optical, X-ray, and GeV flares were detected. The contemporaneous MAGIC observations do not show significant very high energy (VHE; ≳100 GeV) gamma-ray emission. The lack of enhancement in radio emission measured by The Owens Valley Radio Observatory indicates the multizone nature of the emission from this object. We constrain the VHE duty cycle of the source to be <16 2014-like flares per year (95 per cent confidence). For the first time for this source, a broad-band low-state spectral energy distribution is constructed with a deep exposure up to the VHE range. A flux upper limit on the low-state VHE gamma-ray emission of an order of magnitude below that of the 2014 flare is determined. The X-ray data are used to fit the column density of (8.10 ± 0.93$_{stat}$) $\times$ 10$^{21}$ cm$^{-2}$ of the dust in the lensing galaxy. VLBI observations show a clear radio core and jet components in both lensed images, yet no significant movement of the components is seen. The radio measurements are used to model the source-lens-observer geometry and determine the magnifications and time delays for both components. The quiescent emission is modelled with the high-energy bump explained as a combination of synchrotron-self-Compton and external Compton emission from a region located outside of the broad-line region. The bulk of the low-energy emission is explained as originating from a tens-of-parsecs scale jet.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
    Wyświetlanie 1-8 z 8

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