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An X-ray investigation of powerful far-infrared galaxies
K. Iwasawa
We present ASCA results on four prototype powerful far-infrared galaxies, Mrk231, Mrk273, Arp220 and NGC6240. The soft X-ray spectra show signatures of thermal emission with temper…
Heavy and Complex X-ray Absorption Towards the Nucleus of Markarian 6
John Feldmeier, W. N. Brandt, M. Elvis +3
We have used the ASCA satellite to make the first X-ray spectra of Markarian 6, a bright Seyfert 1.5 galaxy with complex and variable permitted lines, an ionization cone, and remar…
An RXTE Observation of the Seyfert 1 Galaxy MCG-6-30-15 : X-ray Reflection and the Iron Abundance
J. C. Lee, A. C. Fabian, C. S. Reynolds +2
We report on a 50 ks observation of the bright Seyfert 1 galaxy MCG--6-30-15 with the Rossi X-ray Timing Explorer. The data clearly show the broad fluorescent iron line (equivalent…
Do nuclear starbursts obscure the X-ray background?
A. C. Fabian, X. Barcons, O. Almaini +1
We propose a model for the source of the X-ray background (XRB) in which low luminosity active nuclei (L<10^43 erg/s) are obscured by nuclear starbursts within the inner 100pc. The…
ASCA spectroscopy of the luminous infrared galaxy NGC6240: X-ray emission from a starburst and a buried active nucleus
K. Iwasawa, A. Comastri
We present an X-ray spectral study of the prototype far-infrared galaxy NGC6240 from ASCA. The soft X-ray spectrum (below 2 keV) shows clear signatures of thermal emission well des…
The ASCA spectrum of the z=4.72 blazar, GB 1428+4217
A. C. Fabian, K. Iwasawa, A. Celotti +3
The X-ray luminous quasar GB 1428+4217 at redshift 4.72 has been observed with ASCA. The observed 0.5-10 keV flux is 3.2E-12 erg/s/cm2. We report here on the intrinsic 4-57 keV X-r…