Chandra observations of the X-ray environment of BL Lacs

Details Chandra observations of the X-ray environment of BL Lacs Chandra observations of the X-ray environment of BL Lacs

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.7901d&link_type=abstract

American Astronomical Society Meeting 207, #79.01; Bulletin of the American Astronomical Society, Vol. 37, p.1295

Astronomy and Astrophysics

Astronomy

Scientific paper

According to the unification schemes for radio loud Active Galactic Nuclei, BL Lacertae objects (BL Lacs) are sources seen along the jet axis, while the Fanaroff-Riley (FR) type I radio galaxies are the misaligned parent population. A model-independent probe of this idea is represented by studies of the near environment: similar large-scale emission will support the unification schemes. In a previous work we showed that extended emission is present in 3 BL Lacs and its characteristics are consistent with those found around FR Is. These results were obtained using data from very short Chandra ACIS observations of a limited sample of 6 closeby objects (z<0.07). Here we show preliminary findings from a study of archival Chandra longer exposures of additional 9 sources, whose redshift extends to z=0.36. For 6 sources the observations were performed using the High Resolution Camera (HRC), while the remaining sources have been observed by ACIS.

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