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The fast, luminous ...
The fast, luminous ultraviolet transient AT2018cow : extreme supernova, or disruption of a star by an intermediate-mass black hole?
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Perley, Daniel A. (author)
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Mazzali, Paolo A. (author)
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Yan, Lin (author)
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show more...
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Cenko, S. Bradley (author)
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Gezari, Suvi (author)
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Taggart, Kirsty (author)
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Blagorodnova, Nadia (author)
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Fremling, Christoffer (author)
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Mockler, Brenna (author)
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Singh, Avinash (author)
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Tominaga, Nozomu (author)
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Tanaka, Masaomi (author)
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Watson, Alan M. (author)
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Ahumada, Tomas (author)
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Anupama, G. C. (author)
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Ashall, Chris (author)
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Becerra, Rosa L. (author)
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Bersier, David (author)
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Bhalerao, Varun (author)
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Bloom, Joshua S. (author)
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Butler, Nathaniel R. (author)
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Copperwheat, Chris (author)
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Coughlin, Michael W. (author)
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De, Kishalay (author)
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Drake, Andrew J. (author)
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Duev, Dmitry A. (author)
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Frederick, Sara (author)
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Jesus Gonzalez, J. (author)
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- Goobar, Ariel (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Heida, Marianne (author)
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Ho, Anna Y. Q. (author)
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Horst, John (author)
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Hung, Tiara (author)
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Itoh, Ryosuke (author)
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Jencson, Jacob E. (author)
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Kasliwal, Mansi M. (author)
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Kawai, Nobuyuki (author)
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Khanam, Tanazza (author)
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Kulkarni, Shrinivas R. (author)
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Kumar, Brajesh (author)
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Kumar, Harsh (author)
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Kutyrev, Alexander S. (author)
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Lee, William H. (author)
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Maeda, Keiichi (author)
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Mahabal, Ashish (author)
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Murata, Katsuhiro L. (author)
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Neill, James D. (author)
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Ngeow, Chow-Choong (author)
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Penprase, Bryan (author)
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Pian, Elena (author)
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Quimby, Robert (author)
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Ramirez-Ruiz, Enrico (author)
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Richer, Michael G. (author)
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Roman-Zuniga, Carlos G. (author)
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Sahu, D. K. (author)
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Srivastav, Shubham (author)
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Socia, Quentin (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Tachibana, Yutaro (author)
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- Taddia, Francesco (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Tinyanont, Samaporn (author)
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Troja, Eleonora (author)
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Ward, Charlotte (author)
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Wee, Jerrick (author)
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Yu, Po-Chieh (author)
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(creator_code:org_t)
- 2018-12-22
- 2019
- English.
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In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 484:1, s. 1031-1049
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https://doi.org/10.1...
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https://academic.oup...
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Abstract
Subject headings
Close
- Wide-field optical surveys have begun to uncover large samples of fast (t(rise) less than or similar to 5 d), 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 AT 2018cow (ATLAS 18qqn), the first fast-luminous optical transient to be found in real time at low redshift. Our first spectra (<2 days after discovery) are entirely featureless. A very broad absorption feature suggestive of near-relativistic velocities develops between 3 and 8 days, then disappears. Broad emission features of H and He develop after >10 days. The spectrum remains extremely hot throughout its evolution, and the photospheric radius contracts with time (receding below R < 10 (14) cm after 1 month). This behaviour does not match that of any known supernova, although a relativistic jet within a fallback supernova could explain some of the observed features. Alternatively, the transient could originate from the disruption of a star by an intermediate-mass black hole, although this would require long-lasting emission of highly super-Eddington thermal radiation. In either case, AT 2018cow suggests that the population of fast luminous transients represents a new class of astrophysical event. Intensive follow-up of this event in its late phases, and of any future events found at comparable distance, will be essential to better constrain their origins.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Black hole
- stars
- supernovae: general
- supernova: individual: AT2018cow
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Perley, Daniel A ...
-
Mazzali, Paolo A ...
-
Yan, Lin
-
Cenko, S. Bradle ...
-
Gezari, Suvi
-
Taggart, Kirsty
-
show more...
-
Blagorodnova, Na ...
-
Fremling, Christ ...
-
Mockler, Brenna
-
Singh, Avinash
-
Tominaga, Nozomu
-
Tanaka, Masaomi
-
Watson, Alan M.
-
Ahumada, Tomas
-
Anupama, G. C.
-
Ashall, Chris
-
Becerra, Rosa L.
-
Bersier, David
-
Bhalerao, Varun
-
Bloom, Joshua S.
-
Butler, Nathanie ...
-
Copperwheat, Chr ...
-
Coughlin, Michae ...
-
De, Kishalay
-
Drake, Andrew J.
-
Duev, Dmitry A.
-
Frederick, Sara
-
Jesus Gonzalez, ...
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Goobar, Ariel
-
Heida, Marianne
-
Ho, Anna Y. Q.
-
Horst, John
-
Hung, Tiara
-
Itoh, Ryosuke
-
Jencson, Jacob E ...
-
Kasliwal, Mansi ...
-
Kawai, Nobuyuki
-
Khanam, Tanazza
-
Kulkarni, Shrini ...
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Kumar, Brajesh
-
Kumar, Harsh
-
Kutyrev, Alexand ...
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Lee, William H.
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Maeda, Keiichi
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Mahabal, Ashish
-
Murata, Katsuhir ...
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Neill, James D.
-
Ngeow, Chow-Choo ...
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Penprase, Bryan
-
Pian, Elena
-
Quimby, Robert
-
Ramirez-Ruiz, En ...
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Richer, Michael ...
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Roman-Zuniga, Ca ...
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Sahu, D. K.
-
Srivastav, Shubh ...
-
Socia, Quentin
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Sollerman, Jespe ...
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Tachibana, Yutar ...
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Taddia, Francesc ...
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Tinyanont, Samap ...
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Troja, Eleonora
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Ward, Charlotte
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Wee, Jerrick
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Yu, Po-Chieh
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Monthly notices ...
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Stockholm University