Abstract
We report on the results of two coordinated multiwavelength campaigns that focused on the blazar Markarian 421 during its 2006 and 2008 outbursts. These campaigns obtained UV and X-ray data using the XMM-Newton satellite, while the gamma-ray data were obtained utilizing three imaging atmospheric Cerenkov telescopes, the Whipple 10 m telescope and VERITAS, both based in Arizona, as well as the MAGIC telescope, based on La Palma in the Canary Islands. The coordinated effort between the gamma-ray groups allowed for truly simultaneous data in UV/X-ray/gamma-ray wavelengths during a significant portion of the XMM-Newton observations. This simultaneous coverage allowed for a reliable search for correlations between UV, X-ray, and gamma-ray variability over the course of the observations. Investigations of spectral hysteresis and modeling of the spectral energy distributions are also presented.
Disciplines
Astrophysics and Astronomy | Physical Sciences and Mathematics
DOI
10.1088/0004-637X/703/1/169
Publisher
IOP Publishing
License Condition
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Acciari, V. A. et al. (2009) ‘SIMULTANEOUS MULTIWAVELENGTH OBSERVATIONS OF MARKARIAN 421 DURING OUTBURST’, The Astrophysical Journal, 703(1), pp. 169–178. doi: 10.1088/0004-637X/703/1/169.
Publication Details
The Astrophysical Journal .
© 2009. The American Astronomical Society