5 papers · 1 filter
Exploring X-ray emission and absorption in AGN with XMM-Newton EPIC
Ken Pounds
Broad band X-ray spectra of high statistical quality obtained with the EPIC instruments on XMM-Newton are being used to address key issues in AGN Physics, including the evidence fo…
What can we learn from EPIC X-ray spectra of Seyfert 1 galaxies?
Ken Pounds, James Reeves
The EPIC detectors on XMM-Newton provide the most sensitive broad band (0.3-12 keV) X-ray spectra to date. Observations of 6 Seyfert 1 galaxies, covering a wide luminosity range, a…
Studies of the high luminosity quasar, PDS 456
J. Reeves, P. O'Brien, S. Vaughan +5
X-ray and multi-wavelength observations of the most luminous known local (z<0.3) AGN, the recently discovered radio-quiet quasar PDS 456, are presented. The spectral energy distrib…
Evidence for an ionised disc in the narrow-line Seyfert 1 galaxy Ark 564
S. Vaughan, K. A. Pounds, J. Reeves +2
We present simultaneous ASCA and RXTE observations of Ark 564, the brightest known ``narrow-line'' Seyfert 1 in the 2-10 keV band. The measured X-ray spectrum is dominated by a ste…
Steep Spectrum Seyfert Galaxies
K. A. Pounds, W. N. Brandt
Seyfert-type AGN that exhibit unusually strong and steep soft X-ray spectra are reviewed, building on observations made during the ROSAT all-sky survey. Two individual cases are de…