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Sökning: WFRF:(Nomoto Ken'ichi) > (2015-2019) > A new, faint popula...

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FältnamnIndikatorerMetadata
00005246naa a2200649 4500
001oai:lup.lub.lu.se:d1186674-d8c5-42c2-8565-6a307e64b2c5
003SwePub
008220331s2017 | |||||||||||000 ||eng|
0247 a https://lup.lub.lu.se/record/d1186674-d8c5-42c2-8565-6a307e64b2c52 URI
0247 a https://doi.org/10.1093/mnras/stx4172 DOI
040 a (SwePub)lu
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Bauer, Franz E.u EMBIGGEN Anillo,Millennium Institute for Astrophysics,Pontifical Catholic University of Chile,Space Science Institute4 aut
2451 0a A new, faint population of X-ray transients
264 c 2017-02-20
264 1b Oxford University Press (OUP),c 2017
300 a 17 s.
520 a We report on the detection of a remarkable new fast high-energy transient found in the Chandra Deep Field-South, robustly associated with a faint (mR = 27.5mag, zph ~2.2) host in the CANDELS survey. The X-ray event is comprised of 115+12 -11 net 0.3-7.0 keV counts, with a light curve characterized by an ~100 s rise time, a peak 0.3-10 keV flux of ~5 × 10-12 erg s-1 cm-2 and a power-law decay time slope of -1.53 ± 0.27. The average spectral slope is Γ = 1.43+0.23 -0.13, with no clear spectral variations. The X-ray and multiwavelength properties effectively rule out the vast majority of previously observed highenergy transients. A few theoretical possibilities remain: an 'orphan' X-ray afterglow from an off-axis short-duration gamma-ray burst (GRB) with weak optical emission, a low-luminosity GRB at high redshift with no prompt emission below ~20 keV rest frame, or a highly beamed tidal disruption event (TDE) involving an intermediate-mass black hole and a white dwarf with little variability. However, none of the above scenarios can completely explain all observed properties. Although large uncertainties exist, the implied rate of such events is comparable to those of orphan and low-luminosity GRBs as well as rare TDEs, implying the discovery of an untapped regime for a known transient class, or a new type of variable phenomena whose nature remains to be determined.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a Galaxies: active
653 a Gamma-ray burst: general
653 a X-rays: bursts
653 a X-rays: general
7001 a Treister, Ezequielu Pontifical Catholic University of Chile,EMBIGGEN Anillo,University of Concepción4 aut
7001 a Schawinski, Kevinu ETH Zürich4 aut
7001 a Schulze, Steveu Millennium Institute for Astrophysics,Pontifical Catholic University of Chile4 aut
7001 a Luo, Binu Nanjing University4 aut
7001 a Alexander, David M.u Durham University4 aut
7001 a Brandt, William N.u Pennsylvania State University4 aut
7001 a Comastri, Andreau INAF Osservatorio Astronomico di Bologna4 aut
7001 a Forster, Franciscou University of Chile,Millennium Institute for Astrophysics4 aut
7001 a Gilli, Robertou INAF Osservatorio Astronomico di Bologna4 aut
7001 a Kann, David Alexanderu Thuringer Landessternwarte Tautenburg4 aut
7001 a Maeda, Keiichiu Kyoto University,University of Tokyo4 aut
7001 a Nomoto, Ken'ichiu University of Tokyo4 aut
7001 a Paolillo, Mauriziou Istituto Nazionale di Fisica Nucleare, Sezione di Napoli,University of Naples Federico II,Italian Space Agency4 aut
7001 a Ranalli, Pierou Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)astr-pri
7001 a Schneider, Donald P.u Pennsylvania State University4 aut
7001 a Shemmer, Ohadu University of North Texas4 aut
7001 a Tanaka, Masaomiu National Astronomical Observatory of Japan4 aut
7001 a Tolstov, Alexeyu University of Tokyo4 aut
7001 a Tominaga, Nozomuu Konan University4 aut
7001 a Tozzi, Paolou INAF - Osservatorio Astrofisico di Arcetri4 aut
7001 a Vignali, Cristianu University of Bologna,INAF Osservatorio Astronomico di Bologna4 aut
7001 a Wang, Junxianu University of Science and Technology of China4 aut
7001 a Xue, Yongquanu University of Science and Technology of China4 aut
7001 a Yang, Guangu Pennsylvania State University4 aut
7102 a EMBIGGEN Anillob Millennium Institute for Astrophysics4 org
7730 t Monthly Notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 467:4, s. 4841-4857q 467:4<4841-4857x 0035-8711x 1365-2966
8564 u http://dx.doi.org/10.1093/mnras/stx417y FULLTEXT
8564 u http://dro.dur.ac.uk/22080/1/22080.pdf
8564 8u https://lup.lub.lu.se/record/d1186674-d8c5-42c2-8565-6a307e64b2c5
8564 8u https://doi.org/10.1093/mnras/stx417

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