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The gamma-ray burst/supernova connec...

Reichart, Daniel Eric.

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The gamma-ray burst/supernova connection, a distance estimator for gamma -ray bursts, and modeling gamma-ray burst afterglows.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The gamma-ray burst/supernova connection, a distance estimator for gamma -ray bursts, and modeling gamma-ray burst afterglows./
作者:	Reichart, Daniel Eric.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2000,
面頁冊數:	112 p.
附註:	Source: Dissertations Abstracts International, Volume: 62-05, Section: B.
Contained By:	Dissertations Abstracts International62-05B.
標題:	Astronomy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9965144
ISBN:	9780599696570

The gamma-ray burst/supernova connection, a distance estimator for gamma -ray bursts, and modeling gamma-ray burst afterglows.
Reichart, Daniel Eric.

The gamma-ray burst/supernova connection, a distance estimator for gamma -ray bursts, and modeling gamma-ray burst afterglows. - Ann Arbor : ProQuest Dissertations & Theses, 2000 - 112 p.

Source: Dissertations Abstracts International, Volume: 62-05, Section: B.

Thesis (Ph.D.)--The University of Chicago, 2000.

This item must not be added to any third party search indexes.

I present the strongest evidence to date for a connection between gamma-ray bursts (GRBs) and supernovae (SNe). In particular, I show that the unusual brightening and reddening of the optical afterglow of GRB 970228 about one month after the burst is naturally explained by a supernova. Furthermore, I present a possible, Cepheid-like luminosity estimator for the long bursts based on the variability of their light curves. The luminosity estimator can be used to measure luminosity distances to the long bursts that are accurate to a factor of ≈2. Also, the luminosity estimator suggests that GRB 980425 may well be associated with SN 1998bw at a redshift of z = 0.0085, and that GRB 980425 and the cosmological bursts may share a common physical origin. Additionally, I present a very general, Bayesian inference formalism for testing burst afterglow models and constraining the parameter values of acceptable models, and I present models for how extinction by dust, both in host galaxies and in our galaxy, and absorption by the Lyα forest and by H I in host galaxies, change the intrinsic spectrum of afterglows. Finally, I apply this Bayesian inference formalism and these extinction and absorption models to the measurements of the afterglow and host galaxy of GRB 971214.

ISBN: 9780599696570Subjects--Topical Terms:

517668
Astronomy.
Subjects--Index Terms:

Afterglows

The gamma-ray burst/supernova connection, a distance estimator for gamma -ray bursts, and modeling gamma-ray burst afterglows.
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500 $a Source: Dissertations Abstracts International, Volume: 62-05, Section: B.
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506 $a This item must not be added to any third party search indexes.
506 $a This item must not be sold to any third party vendors.
520 $a I present the strongest evidence to date for a connection between gamma-ray bursts (GRBs) and supernovae (SNe). In particular, I show that the unusual brightening and reddening of the optical afterglow of GRB 970228 about one month after the burst is naturally explained by a supernova. Furthermore, I present a possible, Cepheid-like luminosity estimator for the long bursts based on the variability of their light curves. The luminosity estimator can be used to measure luminosity distances to the long bursts that are accurate to a factor of ≈2. Also, the luminosity estimator suggests that GRB 980425 may well be associated with SN 1998bw at a redshift of z = 0.0085, and that GRB 980425 and the cosmological bursts may share a common physical origin. Additionally, I present a very general, Bayesian inference formalism for testing burst afterglow models and constraining the parameter values of acceptable models, and I present models for how extinction by dust, both in host galaxies and in our galaxy, and absorption by the Lyα forest and by H I in host galaxies, change the intrinsic spectrum of afterglows. Finally, I apply this Bayesian inference formalism and these extinction and absorption models to the measurements of the afterglow and host galaxy of GRB 971214.
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650 4 $a Astronomy. $3 517668
650 4 $a Astrophysics. $3 535904
653 $a Afterglows
653 $a Distance estimator
653 $a Gamma-ray bursts
653 $a Supernova
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