Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/28730
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Perley, Daniel A. | en_US |
dc.contributor.author | Mazzali, Paolo A. | en_US |
dc.contributor.author | Yan, Lin | en_US |
dc.contributor.author | Cenko, S. Bradley | en_US |
dc.contributor.author | Gezari, Suvi | en_US |
dc.contributor.author | Taggart, Kirsty | en_US |
dc.contributor.author | Blagorodnova, Nadia | en_US |
dc.contributor.author | Fremling, Christoffer | en_US |
dc.contributor.author | Mockler, Brenna | en_US |
dc.contributor.author | Singh, Avinash | en_US |
dc.contributor.author | Tominaga, Nozomu | en_US |
dc.contributor.author | Tanaka, Masaomi | en_US |
dc.contributor.author | Watson, Alan M. | en_US |
dc.contributor.author | Ahumada, Tomás | en_US |
dc.contributor.author | Anupama, G. C. | en_US |
dc.contributor.author | Ashall, Chris | en_US |
dc.contributor.author | Becerra, Rosa L. | en_US |
dc.contributor.author | Bersier, David | en_US |
dc.contributor.author | Bhalerao, Varun | en_US |
dc.contributor.author | Bloom, Joshua S. | en_US |
dc.contributor.author | Butler, Nathaniel R. | en_US |
dc.contributor.author | Copperwheat, Chris | en_US |
dc.contributor.author | Coughlin, Michael W. | en_US |
dc.contributor.author | De, Kishalay | en_US |
dc.contributor.author | Drake, Andrew J. | en_US |
dc.contributor.author | Duev, Dmitry A. | en_US |
dc.contributor.author | Frederick, Sara | en_US |
dc.contributor.author | González, J. Jesús | en_US |
dc.contributor.author | Goobar, Ariel | en_US |
dc.contributor.author | Heida, Marianne | en_US |
dc.contributor.author | Ho, Anna Y. Q. | en_US |
dc.contributor.author | Horst, John | en_US |
dc.contributor.author | Hung, Tiara | en_US |
dc.contributor.author | Itoh, Ryosuke | en_US |
dc.contributor.author | Jencson, Jacob E. | en_US |
dc.contributor.author | Kasliwal, Mansi M. | en_US |
dc.contributor.author | Kawai, Nobuyuki | en_US |
dc.contributor.author | Khanam, Tanazza | en_US |
dc.contributor.author | Kulkarni, Shrinivas R. | en_US |
dc.contributor.author | Kumar, Brajesh | en_US |
dc.contributor.author | Kumar, Harsh | en_US |
dc.contributor.author | Kutyrev, Alexander S. | en_US |
dc.contributor.author | Lee, William H. | en_US |
dc.contributor.author | Maeda, Keiichi | en_US |
dc.contributor.author | Mahabal, Ashish | en_US |
dc.contributor.author | Murata, Katsuhiro L. | en_US |
dc.contributor.author | Neill, James D. | en_US |
dc.contributor.author | Ngeow, Chow-Choong | en_US |
dc.contributor.author | Penprase, Bryan | en_US |
dc.contributor.author | PIAN, Elena | en_US |
dc.contributor.author | Quimby, Robert | en_US |
dc.contributor.author | Ramirez-Ruiz, Enrico | en_US |
dc.contributor.author | Richer, Michael G. | en_US |
dc.contributor.author | Román-Zúñiga, Carlos G. | en_US |
dc.contributor.author | Sahu, D. K. | en_US |
dc.contributor.author | Srivastav, Shubham | en_US |
dc.contributor.author | Socia, Quentin | en_US |
dc.contributor.author | Sollerman, Jesper | en_US |
dc.contributor.author | Tachibana, Yutaro | en_US |
dc.contributor.author | Taddia, Francesco | en_US |
dc.contributor.author | Tinyanont, Samaporn | en_US |
dc.contributor.author | Troja, Eleonora | en_US |
dc.contributor.author | Ward, Charlotte | en_US |
dc.contributor.author | Wee, Jerrick | en_US |
dc.contributor.author | Yu, Po-Chieh | en_US |
dc.date.accessioned | 2020-12-07T14:35:59Z | - |
dc.date.available | 2020-12-07T14:35:59Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28730 | - |
dc.description.abstract | Wide-field optical surveys have begun to uncover large samples of fast (t<SUB>rise</SUB> ≲ 5 d), luminous (M<SUB>peak</SUB> < -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<SUP>14</SUP> 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. | en_US |
dc.language.iso | eng | en_US |
dc.title | The fast, luminous ultraviolet transient AT2018cow: extreme supernova, or disruption of a star by an intermediate-mass black hole? | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty3420 | en_US |
dc.identifier.scopus | 2-s2.0-85062026658 | en_US |
dc.identifier.isi | 000462293100073 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/484/1/1031/5257847 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 484 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 1031 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.484.1031P | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-8646-4858 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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