Screening high-z GRBs with BAT prompt emission properties

被引：0

作者：

Ukwatta, T. N. ^{[1
,2
]}

Sakamoto, T. ^{[2
,3
]}

Stamatikos, M. ^{[2
,4
]}

Gehrels, N. ^{[2
]}

Dhuga, K. S. ^{[1
]}

机构：

[1] George Washington Univ, Washington, DC 20052 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Univ Maryland, Baltimore County, Baltimore, MD 21250 USA

[4] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA

来源：

GAMMA-RAY BURSTS 2007 | 2008年 / 1000卷

关键词：

gamma-ray bursts; high-z GRBs;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Detecting high-z GRBs is important for constraining the GRB formation rate, and tracing the history of re-ionization and metallicity of the universe. Based on the current sample of GRBs detected by Swift with known redshifts, we investigated the relationship between red-shift, and spectral and temporal characteristics, using the BAT event-by-event data. We found red-shift trends for the peak-flux-normalized temporal width T90, the light curve variance, the peak flux, and the photon index in simple power-law fit to the BAT event data. We have constructed criteria for screening GRBs with high red-shifts. This will enable us to provide a much faster alert to the GRB community of possible high-z bursts.

引用

页码：166 / +

页数：2

共 3 条

[1]

GILFANOV M, 2002, LUML C, P157

[2]

LAMB DQ, 2000, APJ, V536, pL1

[3] GRB050904 at redshift 6.3:: observations of the oldest cosmic explosion after the Big Bang [J].

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D'Avanzo, P ;

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Campana, S ;

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Gorosabel, J ;

Burrows, DN ;

Capalbi, M ;

Cusumano, G ;

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D'Elia, V ;

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Fugazza, D ;

Gehrels, N ;

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Lazzati, D ;

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Melandri, A ;

Mirabel, IF ;

Moles, M ;

Moretti, A ;

Mason, KO ;

Nousek, J ;

Osborne, J ;

Pellizza, LJ ;

Perna, R ;

Piranomonte, S ;

Piro, L ;

Postigo, AD ;

Romano, P .

ASTRONOMY & ASTROPHYSICS, 2005, 443 (01) :L1-L5

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