The Highest Historical X-Ray Flux in HBL source H1426+428 through the 0.3-10 keV Band
ATel #4937; Bidzina Kapanadze (Ilia State Iniversity)
on 2 Apr 2013; 21:35 UT
Credential Certification: Bidzina Kapanadze (bidzina_kapanadze@iliauni.edu.ge)
We report the highest historical X-ray flux in the high energy peaked BL Lacertae source H1426+428 (also known as 1ES 1426+428, z=0.129) through 0.3-10 keV band detected by the X-ray Telescope (XRT) onboard the Swift satellite which observed the source during about 0.3 hr on 2013 March 25. Using the data allocated at the webpage http://www.swift.psu.edu/monitoring/ it was found that the object showed the 0.3-10 keV flux of 5.60+/-0.11 cts/s which is more than 2-times higher to that derived during previous observation performed on March 18, 2013 (2.66+\-0.05 cts/s). No flux variability at the 99.9% confidence level is detected during these observations. In the past, the source never has shown the X-ray flux greater than 4.5 cts/s. Therefore, we strongly encourage the intensive multiwavelength observations of H1426+428 as with the ground-based telescopes as by means of the different space missions.
