Lamon 2007 用INTEGRAL的伽玛暴做量子引力

主要内容:
采用新的办法计算spectral time lag。

精彩摘抄:


文章信息:

arXiv:0706.4039 (cross-list from gr-qc) [ps, pdf, other]

Title: Study of Quantum Gravity Effects in INTEGRAL Gamma-Ray Bursts

Authors: Raphael Lamon, Nicolas Produit, Frank Steiner

Comments: 11 pages, 24 figures, submitted to A&A

Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics (astro-ph); High Energy Physics - Theory (hep-th)

We search for possible time lags caused by quantum gravitational (QG) effects using gamma-ray bursts detected by INTEGRAL. The advantage of this satellite is that we have at our disposal the energy and arrival time of every single photon, which enhances the precision of the time resolution. We present a new method for seeking time lags in unbinned data using a maximum likelihood and support our conclusions with Monte Carlo simulations. These simulations show that today's satellites are not apt to measure effects at the order of the Planck mass. However, a naive analysis of the data shows a mass scale well below the expected one. Only by correcting for internal time lags are we able to give a lower bound on the quantum gravitation mass scale that is in accordance with predictions.