Details

Autor(en) / Beteiligte

• Sonbas, E.
• MacLachlan, G. A.
• Dhuga, K. S.
• Veres, P.
• Shenoy, A.
• Ukwatta, T. N.

Titel

GAMMA-RAY BURSTS: TEMPORAL SCALES AND THE BULK LORENTZ FACTOR

Ist Teil von

• The Astrophysical journal, 2015-06, Vol.805 (2), p.1-6

Ort / Verlag

United Kingdom: The American Astronomical Society

Erscheinungsjahr

2015

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• ABSTRACT For a sample of Swift and Fermi gamma-ray bursts, we show that the minimum variability timescale and the spectral lag of the prompt emission is related to the bulk Lorentz factor in a complex manner. For small Γ's, the variability timescale exhibits a shallow (plateau) region. For large Γ's, the variability timescale declines steeply as a function of Γ ( ). Evidence is also presented for an intriguing correlation between the peak times, tp, of the afterglow emission and the prompt emission variability timescale.