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    Wyświetlanie 1-7 z 7
    Tytuł:
    Effect of inoculation of AM fungi and beneficial microorganisms on growth and nutrient uptake of Eleusine coracana (L.) Gaertn. (finger millet)
    Autorzy:
    Ramakrishnan, K.
    Bhuvaneswari, G.
    Tematy:
    inoculation
    fungi
    Glomus fasciculatum
    beneficial microorganism
    microorganism
    growth
    nutrient uptake
    Eleusine coracana
    finger millet zob.African finger millet
    African finger millet
    red millet zob.African finger millet
    caracan millet zob.African finger millet
    koracan zob.African finger millet
    ragi zob.African finger millet
    biomass production
    Pokaż więcej
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Powiązania:
    https://bibliotekanauki.pl/articles/11208.pdf  Link otwiera się w nowym oknie
    Opis:
    Biofertilizers have been used as sources to improve plant nutrients in sustainable agriculture. Biofertilizers are low cost, renewable sources of plant nutrients which supplement chemical fertilizers. Mycorrhizal fungi are a major component of agricultural natural resources and members of kingdom fungi. The term ‘mycorrhiza’ is derived from Greek word which means ‘fungus root’. Earthen pot experiments were carried out to study the inoculation effect of Arbuscular Mycorrhizal (AM) fungi (Glomus mossease), Azospirillium brasilense and PSB on plant height, dry weight of root and shoot, per cent root colonization, spore number, P and N uptake. Experimental pots were filled with 4 kegs of sterilized soil and maintained in green house at 25-30 °C temperature. Single inoculation of AM fungi and combined inoculation of AM fungi with Azospirillium brasilense or PSB was found to be moderately increased in all the growth parameters. However triple inoculation of AM fungi, Azospirillium brasilense and PSB was found to have highest growth parameters.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence on different types of Mycorrhizal fungi on crop productivity in ecosystem
    Autorzy:
    Ramakrishnan, K.
    Bhuvaneswari, G.
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Powiązania:
    https://bibliotekanauki.pl/articles/11060.pdf  Link otwiera się w nowym oknie
    Opis:
    Mycorrhizal fungi greatly enhanced the ability of plants to take up phosphorus and other nutrients those are relatively immobile and exist in low concentration in the soil solution. Fungi can be important in the uptake of other nutrients by the host plant. Mycorrhizae establish symbiotic relationships with plants and play an essential role in plant growth, disease protection, and overall soil quality. Of the seven types of mycorrhizae described in current scientific literature (arbuscular, ecto, ectendo, arbutoid, monotropoid, ericoid and orchidaceous mycorrhizae), the arbuscular and ectomycorrhizae are the most abundant and widespread. This chapter presents an overview of current knowledge of mycorrhizal interactions, processes, and potential benefits to society. The molecular basis of nutrient exchange between arbuscular mycorrhizal (AM) fungi and host plants is presented; the role of AM fungi in disease protection, alleviation of heavy metal stress and increasing grain production. Most land plants form associations with mycorrhizal fungi. Mycorrhizas are mutualistic associations between fungi and plant roots. They are described as symbiotic because the fungus receives photo synthetically derived carbon compounds and the plant has increased access to mineral nutrients and sometimes water.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pharmacognostic studies on root of Stachytarpheta jamaicensis
    Autorzy:
    Sivaranjani, R.
    Ramakrishnan, K.
    Bhuvaneswari, G.
    Tematy:
    pharmacognosy
    root
    Stachytarpheta jamaicensis
    plant morphology
    Verbenaceae
    medicinal use
    Pokaż więcej
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Powiązania:
    https://bibliotekanauki.pl/articles/11911.pdf  Link otwiera się w nowym oknie
    Opis:
    The present study reveals the pharmacognostic studies root of Stachytarpheta jamaicensis (L) Vahl. The objectives of the present work comprises of collection, identification, macroscopical, Ph of aqueous solution, soluble ash, alcohol soluble extractive, flouresence analysis of root. The root section was taken and microscopical studies were carried out, the root shows derived from the cork, the periderm tissue is formed, which replaces the epidermis in the outer layer. The next tissue identified inwards was the cortex. Sclerenchyma was seen as a ring in the roots, while as a group, formed from a group of cells, in the mature ones. In the middle, xylem tissue occupies a large area, just below the phloem tissue.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinetic investigation of oxidation of aromatic anils by magnesium monoperoxyphthalate in aqueous acidic medium
    Autorzy:
    Ramakrishnan, V.
    Kulandaivelu, K.
    Tematy:
    Aromatic anils
    kinetics
    oxidation
    Magnesium monoperoxyphthalate
    Pokaż więcej
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Powiązania:
    https://bibliotekanauki.pl/articles/778900.pdf  Link otwiera się w nowym oknie
    Opis:
    The kinetics of oxidation of aromatic anils to benzaldehyde and azobenzene by magnesium monoperoxyphthalate (MMPP) has been studied in aqueous acetic acid medium. The low dielectric constant of the medium facilitates the reactivity. It has been found that ionic strength of the reaction has no significant effect on rate. The added acrylonitrile has no effect on the reaction rate indicating the absence of free radical mechanism. The added Mn(II) decreases the rate of the reaction, which indicates the involvement of two-electron transfer. Highly negative ΔS# values indicate a structured transition state. The deviation of Hammett plot is noted and a non-linear concave downward curve is obtained for the anils with substituents in the aniline moiety. The observed break in the log kobs versus σ is attributed to the transition state whereas the non-linear concave upward curve is observed for the substituents in the benzaldehyde moiety and a non-linear concacve upward curve is observed for the substituents in the combination of aniline and benzaldehyde moiety and a suitable mechanism is proposed.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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.
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    Ren, H.
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    Liu, Q.
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    Mangano, S.
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    Benbow, W.
    Roellinghoff, G.
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    Morcuende, D.
    Spolon, A.
    Láinez, M.
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    Christiansen, J. L.
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    Akiyama, K.
    Rawlings, M. G.
    Gasparyan, S.
    Escudero, J.
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    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.
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    Nakamura, Masanori
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    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.
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    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
      Wyświetlanie 1-7 z 7

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