HEGRA detects TeV flare from 1ES1959+650
ATel #96; D. Horns, A. Konopelko (Max-Planck Institut f. Kernphysik, Heidelberg)
on 22 May 2002; 15:22 UT
Credential Certification: Dieter Horns (Dieter.Horns@mpi-hd.mpg.de)
Initiated by IAUC # 7903 , the outburst of the nearby BL Lacertae
object 1ES1959+650 (z=0.048) has been detected during May 17-21
(MJD 52411-52415) with the HEGRA system of Cherenkov telescopes
on La Palma of Canary Islands. During the observation time, the
overall flux above 1 TeV (2.4*10^{26} Hz) increased from
(1+/-0.5)*10^{-11}ph/cm^2/s to a peak value of
(3.5+/-0.4)*10^{-11} ph/cm^2/s in the
night on May 19 (MJD 52413.1-52413.2). Within the individual nights,
a flux increase with a doubling time of less than one hour has
been observed.
Observations in
other wavelengths are encouraged. HEGRA will continue observations
on June 2 (MJD 52427) with a daily monitoring.
