HUBBLE SPACE TELESCOPE OBSERVATIONS OF THE AFTERGLOW, SUPERNOVA, AND HOST GALAXY ASSOCIATED WITH THE EXTREMELY BRIGHT GRB 130427A

被引：30

作者：

Levan, A. J. ^{[1
]}

Tanvir, N. R. ^{[2
]}

Fruchter, A. S. ^{[3
]}

Hjorth, J. ^{[4
]}

Pian, E. ^{[5
,6
,7
]}

Mazzali, P. ^{[8
]}

Hounsell, R. A. ^{[3
]}

Perley, D. A. ^{[9
]}

Cano, Z. ^{[10
]}

Graham, J. ^{[3
]}

Cenko, S. B. ^{[11
]}

Fynbo, J. P. U. ^{[4
]}

Kouveliotou, C. ^{[12
]}

Pe'er, A. ^{[13
]}

Misra, K. ^{[14
]}

Wiersema, K. ^{[2
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[3] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[4] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark

[5] INAF, Trieste Astron Observ, I-34143 Trieste, Italy

[6] Scuola Normale Super Pisa, I-56126 Pisa, Italy

[7] European So Observ, D-85748 Garching, Germany

[8] Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England

[9] CALTECH, Dept Astron, Pasadena, CA 91125 USA

[10] Univ Iceland, Inst Sci, Ctr Astrophys & Cosmol, IS-107 Reykjavik, Iceland

[11] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA

[12] NASA, Marshall Space Flight Ctr, Sci & Technol Off, Huntsville, AL 35812 USA

[13] Natl Univ Ireland Univ Coll Cork, Dept Phys, Cork, Ireland

[14] Aryabhatta Res Inst Observat Sci, Naini Tal 263002, India

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 792卷 / 02期

关键词：

gamma-ray burst: general; supernovae: general; GAMMA-RAY BURSTS; CORE-COLLAPSE SUPERNOVAE; LONG; DISCOVERY; SIGNATURES; EVOLUTION; SEARCH; 2010BH;

D O I：

10.1088/0004-637X/792/2/115

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Hubble Space Telescope (HST) observations of the exceptionally bright and luminous Swift gamma-ray burst (GRB), GRB 130427A. At z = 0.34, this burst affords an excellent opportunity to study the supernova (SN) and host galaxy associated with an intrinsically extremely luminous burst (E-iso > 1054 erg): more luminous than any previous GRB with a spectroscopically associated SN. We use the combination of the image quality, UV capability, and invariant point-spread function of HST to provide the best possible separation of the afterglow, host, and SN contributions to the observed light similar to 17 rest-frame days after the burst, utilizing a host subtraction spectrum obtained one year later. Advanced Camera for Surveys grism observations show that the associated SN, SN 2013cq, has an overall spectral shape and luminosity similar to SN 1998bw (with a photospheric velocity, upsilon(ph) similar to 15,000 km s(-1)). The positions of the bluer features are better matched by the higher velocity SN 2010bh (upsilon(ph) similar to 30,000 km s(-1)), but this SN is significantly fainter and fails to reproduce the overall spectral shape, perhaps indicative of velocity structure in the ejecta. We find that the burst originated similar to 4 kpc from the nucleus of a moderately star forming (1M(circle dot) yr(-1)), possibly interacting disk galaxy. The absolute magnitude, physical size, and morphology of this galaxy, as well as the location of the GRB within it, are also strikingly similar to those of GRB 980425/SN 1998bw. The similarity of the SNe and environment from both the most luminous and least luminous GRBs suggests that broadly similar progenitor stars can create GRBs across six orders of magnitude in isotropic energy.

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