If γ-ray bursts are at cosmological distances, then not only their constituent pulses but also the intervals between pulses should be time-dilated. Unlike time-dilation measures of pulse emission, intervals would appear to require negligible correction for redshift of narrower temporal structure from higher energy into the band of observation. However, stretching of pulse intervals is inherently difficult to measure without incurring a timescale-dependent bias since, as time profiles are stretched, more structure can appear near the limit of resolution. This problem is compounded in dimmer bursts because identification of significant structures becomes more problematic. We attempt to minimize brightness bias by equalizing signal-to-noise (s/n) level of all bursts. We analyze wavelet-denoised burst profiles binned to several resolutions, identifying significant fluctuations between pulse structures and interjacent valleys. When bursts are ranked by peak flux, an interval time-dilation signature is evident, but its magnitude and significance are dependent upon temporal resolution and s/n level.
Skip Nav Destination
Article navigation
1 August 1996
Gamma-ray bursts: 3rd Huntsville symposium
25-27 Oct 1995
Huntsville, Alabama (USA)
Research Article|
August 01 1996
Test for time dilation of intervals between pulse structures in GRBs
J. P. Norris;
J. P. Norris
NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771
Search for other works by this author on:
J. T. Bonnell;
J. T. Bonnell
Universities Space Research Association
Search for other works by this author on:
R. J. Nemiroff;
R. J. Nemiroff
George Mason University, Fairfax, Virginia 22030
Search for other works by this author on:
J. D. Scargle
J. D. Scargle
NASA/Ames Research Center, Moffett Field, California 94035
Search for other works by this author on:
AIP Conf. Proc. 384, 77–81 (1996)
Citation
J. P. Norris, J. T. Bonnell, R. J. Nemiroff, J. D. Scargle; Test for time dilation of intervals between pulse structures in GRBs . AIP Conf. Proc. 1 August 1996; 384 (1): 77–81. https://doi.org/10.1063/1.51658
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
2
Views
Citing articles via
Inkjet- and flextrail-printing of silicon polymer-based inks for local passivating contacts
Zohreh Kiaee, Andreas Lösel, et al.
Effect of coupling agent type on the self-cleaning and anti-reflective behaviour of advance nanocoating for PV panels application
Taha Tareq Mohammed, Hadia Kadhim Judran, et al.
Design of a 100 MW solar power plant on wetland in Bangladesh
Apu Kowsar, Sumon Chandra Debnath, et al.
Related Content
Possible detection of signature consistent with time dilation in gamma‐ray bursts
AIP Conference Proceedings (July 1993)
Calibration of tests for time dilation in GRB pulse structures
AIP Conference Proceedings (August 1996)
Time dilation in the peak-to-peak time scale of GRBs
AIP Conference Proceedings (May 1998)
GRB time-dilation measurements corrected for trigger bias
AIP Conference Proceedings (September 2000)
GRB time profiles as cosmic probes: Is time dilation extrinsic or intrinsic?
AIP Conference Proceedings (May 1998)