Prog. Theor. Phys. Supplement No.155 (2004) pp. 397-398
The Hard X-Ray Observation of the Compton-Thick Seyfert 2 Galaxy Mrk 1210
1Department of Physical Sciences, School of Science, Hiroshima
University, Higashi-Hiroshima 739-8526, Japan
2Laboratory for High Energy Astrophysics, Code 662,
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
We observed the Seyfert 2 galaxy Mrk 1210 with BeppoSAX and found that the
X-ray spectral properties are quite different from those found in the previous
observation by ASCA. We find that the reflection component
describes the previously observed ASCA spectra with good precision.
This indicates that the
dramatic spectral variability can be attributed to a large change in the
absorption column density by a factor greater than 5, rather than the
variability of the nuclear emission. In this case, the torus is not
homogeneous but is like a blob of size < 0.001 pc.
DOI : 10.1143/PTPS.155.397
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