SIMBAD references

2016ApJ...826...45R - Astrophys. J., 826, 45-45 (2016/July-3)

A correlation between the intrinsic brightness and average decay rate of gamma-ray burst X-ray afterglow light curves.

RACUSIN J.L., OATES S.R., DE PASQUALE M. and KOCEVSKI D.

Abstract (from CDS):

We present a correlation between the average temporal decay ( α_{X,avg,\gt 200s} ) and early-time luminosity ( L_{X,200s} ) of X-ray afterglows of gamma-ray bursts as observed by the Swift X-ray Telescope. Both quantities are measured relative to a rest-frame time of 200 s after the γ-ray trigger. The luminosity-average decay correlation does not depend on specific temporal behavior and contains one scale-independent quantity minimizing the role of selection effects. This is a complementary correlation to that discovered by Oates et al. in the optical light curves observed by the Swift Ultraviolet Optical Telescope. The correlation indicates that, on average, more luminous X-ray afterglows decay faster than less luminous ones, indicating some relative mechanism for energy dissipation. The X-ray and optical correlations are entirely consistent once corrections are applied and contamination is removed. We explore the possible biases introduced by different light-curve morphologies and observational selection effects, and how either geometrical effects or intrinsic properties of the central engine and jet could explain the observed correlation.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): gamma-ray burst: general - X-rays: bursts

VizieR on-line data: <Available at CDS (J/ApJ/826/45): table1.dat refs.dat>

Simbad objects: 247

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2019.11.21-16:09:44

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