Are durations of weak gamma-ray bursts reliable?

被引：2
|
作者：
Schmidt, M [1 ]
机构：
[1] CALTECH, Pasadena, CA 91125 USA
来源：
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-COLLOQUIA ON PHYSICS | 2005年 / 28卷 / 03期
关键词：
D O I：
10.1393/ncc/i2005-10057-9
中图分类号：
学科分类号：
摘要：
Simulations in the GUSBAD Catalog of gamma-ray bursts suggest that the apparent duration of a burst decreases as its amplitude is decreased. We see no evidence for this effect in the BATSE catalog. We show that for a burst at the detection limit, the typical signal-to-noise ratio at the edges of the T-90 duration is around 1.5, suggesting that T-90 must be quite uncertain. The situation for T-50 is less unfavorable. Simulations using the exact procedure to derive the durations listed in the BATSE catalog would be useful in quantifying the effect.
引用
收藏
页码：347 / 350
页数：4
相关论文
共 50 条
  • [41] NATURE OF GAMMA-RAY BURSTS
    DAUVILLIER, A
    COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE B, 1977, 285 (15): : 341 - 344
  • [42] Superlong gamma-ray bursts
    Tikhomirova, YY
    Stern, BE
    ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 2005, 31 (05): : 291 - 298
  • [43] COSMIC GAMMA-RAY BURSTS
    STRONG, IB
    KLEBESADEL, RW
    SCIENTIFIC AMERICAN, 1976, 235 (04) : 66 - &
  • [44] The afterglows of gamma-ray bursts
    Kulkarni, SR
    Berger, E
    Bloom, JS
    Chaffee, F
    Diercks, A
    Djorgovski, SG
    Frail, DA
    Galama, TJ
    Goodrich, RW
    Harrison, FA
    Sari, R
    Yost, SA
    DISCOVERIES AND RESEARCH PROSPECTS FROM 8- TO 10-METER-CLASS TELESCOPES, 2000, 4005 : 9 - 21
  • [45] Long gamma-ray bursts
    MacFadyen, A
    SCIENCE, 2004, 303 (5654) : 45 - 46
  • [46] Supernovae and gamma-ray bursts
    Mazzali, Paolo A.
    Nomoto, Ken'ichi
    Maeda, Keiichi
    Deng, Jinsong
    CIRCUMSTELLAR MEDIA AND LATE STAGES OF MASSIVE STELLAR EVOLUTION, 2007, 30 : 23 - +
  • [47] Gamma-ray bursts - What are they?
    Woosley, SE
    SEVENTEENTH TEXAS SYMPOSIUM ON RELATIVISTIC ASTROPHYSICS AND COSMOLOGY, 1995, 759 : 446 - 449
  • [48] Gamma-ray bursts and cosmology
    Lamb, D. Q.
    NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-BASIC TOPICS IN PHYSICS, 2006, 121 (12): : 1413 - 1425
  • [49] Short gamma-ray bursts
    Rosswog, S
    SCIENCE, 2004, 303 (5654) : 46 - 47
  • [50] Gamma-ray bursts and cosmology
    Barbiellini, G
    Longo, F
    CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS, 2003, 3 : 449 - 454
12345