Skip to main content

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

Buy Article:

$55.00 plus tax (Refund Policy)

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.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

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

Document Type: Research Article

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

Publication date: 2005-12-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect 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