Variable Very High Energy Gamma-ray Emission from the Microquasar LS I +61 303
Astrophysics
2010-01-28 v1
Abstract
Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and laboratories for elucidating the physics of relativistic jets. Here we report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LS I +61 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, suggesting the emission is periodic. The strongest gamma-ray emission is not observed when the two stars are closest to one another, implying a strong orbital modulation of the emission or the absorption processes.
Keywords
Cite
@article{arxiv.astro-ph/0605549,
title = {Variable Very High Energy Gamma-ray Emission from the Microquasar LS I +61 303},
author = {MAGIC Collaboration and J. Albert},
journal= {arXiv preprint arXiv:astro-ph/0605549},
year = {2010}
}
Comments
11 pages with 4 figures