Early results from the Chandra X-ray observatory

We present some early results on AGN from the Chandra X-ray Observatory, hi ghlighting high resolution spectroscopy using the High Energy Transmission Grating Spectrometer (HETGS). The quasar PKS 0637-752 was found to have a v ery bright X-ray jet whose shape is remarkably similar to that of the radio jet on a size scale of 100 kpc, but the X-ray emission is still inexplicab ly bright. Two BL Lac objects, PKS 2155-304 and Mrk 421, observed with the spectrometer were found to have no strong absorption or emission features. Other radio loud AGN observed with the HETGS show simple power law spectra without obvious features. (C) 2000 Published by Elsevier Science B.V. All r ights reserved.