伽玛暴(Gamma-Ray Burst)笔记。记录有关伽玛暴的新文章,另外也包括看的老文章、自己的想法、以及跟天文相关的一些东西。 Feel free to leave me a message by comments or by email.

星期三, 九月 17, 2008

Kostelecky 2008 罗伦兹违背的天文检测

主要内容:


精彩摘抄:


文章信息:

· Find Similar Abstracts (with default settings below)
· arXiv e-print (arXiv:0809.2846)
· References in the Article
·
· Translate This Page
Title:
Astrophysical Tests of Lorentz and CPT Violation with Photons
Authors:
Kostelecky, Alan; Mewes, Matthew
Publication:
eprint arXiv:0809.2846
Publication Date:
09/2008
Origin:
ARXIV
Keywords:
Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology
Comment:
11 pages
Bibliographic Code:
2008arXiv0809.2846K

Abstract

A general framework for tests of Lorentz invariance with electromagnetic waves is presented, allowing for operators of arbitrary mass dimension. Signatures of Lorentz violations include vacuum birefringence, vacuum dispersion, and anisotropies. Sensitive searches for violations using sources such as active galaxies, gamma-ray bursts, and the cosmic microwave background are discussed. Direction-dependent dispersion constraints are obtained on operators of dimension 6 and 8 using gamma-ray bursts and the blazar Markarian 501. Stringent constraints on operators of dimension 3 are found using 5-year data from the Wilkinson Microwave Anisotropy Probe. No evidence appears for isotropic Lorentz violation, while some support at one sigma is found for anisotropic violation.
Bibtex entry for this abstract Preferred format for this abstract (see Preferences)

没有评论: