If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

X-ray and -ray emission from Markarian 421 in 2003

$61.74 plus tax (Refund Policy)

Buy Article:

Abstract:

The very-high-energy (VHE) ?-rays from BL Lac object Mrk 421 were observed with the twin stereoscopic Cerenkov system GT-48 in 2003. The observations in April–May have revealed a directional excess of VHE ? quanta with a statistical significance 5.46s. The observed source was located within 0°.1 of the coordinates of Mrk 421. Evidence for similar source emission behaviour of X-rays is correspondingly seen in nearly simultaneous data obtained from the all-sky monitor of the Rossi X-ray Timing Explorer. In the high-energy state of the object at E > 1 TeV, the source emission exceeded the relatively quiescent state by nearly three times and coincided within about 1.5 days with increased activity in the 2–10 keV energy band.

Keywords: Galaxy observations; Individual observations; Mrk 421; -rays

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/10556790600603800

Affiliations: Scientific Research Institute, Crimean Astrophysical Observatory, Nauchny, Crimea, 98409, Ukraine

Publication date: December 1, 2005

More about this publication?
Related content

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more