The Fast, Luminous Ultraviolet Transient AT2018cow: Extreme Supernova, or Disruption of a Star by an Intermediate-Mass Black Hole?
| Autor: | Francesco Taddia, Tiara Hung, Eleonora Troja, Lin Yan, Nozomu Tominaga, Mansi M. Kasliwal, T. Ahumada, G. C. Anupama, Suvi Gezari, James D. Neill, Avinash Singh, Ashish Mahabal, Kirsty Taggart, Quentin J Socia, Po-Chieh Yu, Andrew J. Drake, Rosa L. Becerra, Keiichi Maeda, Varun Bhalerao, Dmitry A. Duev, S. Bradley Cenko, Yutaro Tachibana, D. Bersier, Ryosuke Itoh, Nathaniel R. Butler, Michael W. Coughlin, Carlos Román-Zúñiga, K. L. Murata, Jerrick Wee, C. Ward, Jacob E. Jencson, Elena Pian, Tanazza Khanam, Anna Y. Q. Ho, S. Srivastav, Nobuyuki Kawai, Brenna Mockler, Paolo A. Mazzali, Chris M. Copperwheat, Kaushik De, Chris Ashall, Samaporn Tinyanont, Daniel A. Perley, Michael G. Richer, John C. Horst, Robert M. Quimby, William H. Lee, Masaomi Tanaka, Alan M. Watson, S. Frederick, Enrico Ramirez-Ruiz, A. Kutyrev, Christoffer Fremling, Bryan E. Penprase, Marianne Heida, Jesper Sollerman, Brajesh Kumar, N. Blagorodnova, Harsh Kumar, J. Jesús González, Joshua S. Bloom, Chow-Choong Ngeow, D. K. Sahu, Ariel Goobar, Shrinivas R. Kulkarni |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
stars
Black hole Astrophysics::High Energy Astrophysical Phenomena Population FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astronomy & Astrophysics 01 natural sciences 7. Clean energy individual: AT2018cow [supernova] 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics education 010303 astronomy & astrophysics QC Astrophysics::Galaxy Astrophysics QB High Energy Astrophysical Phenomena (astro-ph.HE) Physics astro-ph.HE education.field_of_study 010308 nuclear & particles physics Astronomy and Astrophysics Radius Stars Supernova Space and Planetary Science Thermal radiation Intermediate-mass black hole Astrophysics - High Energy Astrophysical Phenomena Event (particle physics) general [supernovae] Astronomical and Space Sciences |
| Zdroj: | Monthly Notices of the Royal Astronomical Society, vol 484, iss 1 Perley, D A, Mazzali, P A, Yan, L, Cenko, S B, Gezari, S, Taggart, K, Blagorodnova, N, Fremling, C, Mockler, B, Singh, A, Tominaga, N, Tanaka, M, Watson, A M, Ahumada, T, Anupama, G C, Ashall, C, Becerra, R L, Bersier, D, Bhalerao, V, Bloom, J S, Butler, N R, Copperwheat, C, Coughlin, M W, De, K, Drake, A J, Duev, D A, Frederick, S, Jesus Gonzalez, J, Goobar, A, Heida, M, Ho, A Y Q, Horst, J, Hung, T, Itoh, R, Jencson, J E, Kasliwal, M M, Kawai, N, Khanam, T, Kulkarni, S R, Kumar, B, Kumar, H, Kutyrev, A S, Lee, W H, Maeda, K, Mahabal, A, Murata, K L, Neill, J D, Ngeow, C-C, Penprase, B, Pian, E, Quimby, R, Ramirez-Ruiz, E, Richer, M G, Roman-Zuniga, C G, Sahu, D K, Srivastav, S, Socia, Q, Sollerman, J, Tachibana, Y, Taddia, F, Tinyanont, S, Troja, E, Ward, C, Wee, J & Yu, P-C 2019, ' The fast, luminous ultraviolet transient AT2018cow : extreme supernova, or disruption of a star by an intermediate-mass black hole? ', Monthly Notices of the Royal Astronomical Society, vol. 484, no. 1, pp. 1031-1049 . https://doi.org/10.1093/mnras/sty3420 |
| ISSN: | 0035-8711 |
| Popis: | Wide-field optical surveys have begun to uncover large samples of fast (t_rise < 5d), luminous (M_peak < -18), blue transients. While commonly attributed to the breakout of a supernova shock into a dense wind, the great distances to the transients of this class found so far have hampered detailed investigation of their properties. We present photometry and spectroscopy from a comprehensive worldwide campaign to observe AT2018cow (ATLAS18qqn), the first fast-luminous optical transient to be found in real time at low redshift. Our first spectra (10 days. The spectrum remains extremely hot throughout its evolution, and the photospheric radius contracts with time (receding below R Corrected Figure 8 / Table 4 to use final fits. Includes machine-readable photometry table (hopefully for real this time) |
| Databáze: | OpenAIRE |
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