Reeves, James, Done, Chris, Pounds, Ken, Terashima, Yuichi, Hayashida, Kiyoshi, Anabuki, Naohisa
We present a comparison between the 2001 XMM-Newton and 2005 Suzaku observations of the quasar, PG1211+143 at z=0.0809. Variability is observed in the 7 keV iron K-shell absorption line (at 7.6 keV...
Exploring X-ray emission and absorption in AGN with XMM-Newton EPIC (2005)
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 for strong gravity,...
What can we learn from EPIC X-ray spectra of Seyfert 1 galaxies? (2002)
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, are examined with...
Edelson, Rick, Turner, T. J., Pounds, Ken, Vaughan, Simon, Markowitz, Alex, Marshall, Herman, ...
The bright, soft X-ray spectrum Seyfert 1 galaxies Ark 564 and Ton S180 were monitored for 35 days and 12 days with ASCA and RXTE (and EUVE for Ton S180). The short time scale (hours-days)...
An XMM-Newton observation of the luminous Seyfert 1 galaxy Markarian 509 (2001)
Pounds, Ken, Reeves, James, O'Brien, Paul, Page, Kim, Turner, Martin, Nayakshin, Sergei
We present the spectral analysis of an early XMM-Newton observation of the luminous Seyfert 1 galaxy Markarian 509. We find the hard (2-10 keV) continuum slope, including reflection, to be somewhat...
X-ray Power Density Spectrum of the Narrow Line Seyfert 1 Galaxy Akn 564 (2001)
Pounds, Ken, Edelson, Rick, Markowitz, Alex, Vaughan, Simon
Beginning in 1999 January, the bright, strongly variable Narrow-Line Seyfert 1 (NLS1) galaxy Akn 564 has been observed by RXTE once every ~4.3 days. It was also monitored every ~3.2 hr throughout...