Temporal properties of short gamma-ray bursts

Ehud Nakar, Tsvi Piran

Research output: Contribution to journalArticlepeer-review

Abstract

We analyse a sample of bright short bursts from the BATSE 4B-catalog and find that many short bursts are highly variable (δtmin/T ≪ 1, where δtmin is the shortest pulse duration and T is the burst duration). This indicates that it is unlikely that short bursts are produced by external shocks. We also analyse the available (first 1-2 s) high-resolution Time Tagged Events (TTE) data of some of the long bursts. We find that variability on a 10-ms time-scale is common in long bursts. This result shows that some long bursts are even more variable than it was thought before (δtmin/T ≈ 10-4-10-3).

Original languageEnglish
Pages (from-to)920-926
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume330
Issue number4
DOIs
StatePublished - 11 Mar 2002
Externally publishedYes

Keywords

  • Gamma-rays: bursts

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