X-ray flares observed from six young stars located in the region of star
  clusters NGC 869 and IC 2602
  We present an analysis of seven intense X-ray flares observed from six stars
(LAV 796, LAV 1174, SHM2002 3734, 2MASS 02191082+5707324, V553 Car, V557 Car)
for the first time. These stars are located in the region of young open star
clusters NGC 869 and IC 2602. These flares detected in the XMM-Newton data show
a rapid rise (10-40 minutes) and a slow decay (20-90 minutes). The X-ray
luminosities during the flares in the energy band 0.3-7.5 keV are in the range
of $10^{29.9}$ to $10^{31.7}$ erg s$^{-1}$. The strongest flare was observed
with the ratio $\sim 13$ for count rates at peak of the flare to the quiescent
intensity. The maximum temperature during the flares has been found to be
$\sim$100 MK. The semi loop lengths for the flaring loops are estimated to be
of the order of $\rm{10^{10}}$ cm. The physical parameters of the flaring
structure, the peak density, pressure, and minimum magnetic field required to
confine the plasma have been derived and found to be consistent with flares
from pre-main sequence stars in the Orion and the Taurus-Auriga-Perseus region.
