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Dust masses and star formation in bright IRAS galaxies Application of a physical model for the interpretation of FIR observations
A. Misiriotis, I. E. Papadakis, N. D. Kylafis +1
We address the problem of modeling the far-infrared (FIR) spectrum and deriving the star-formation rate (SFR) and the dust mass of spiral galaxies. We use the realistic physical mo…
Combined Long and Short Timescale X-ray Variability of NGC4051 with RXTE and XMM-Newton
I. M. McHardy, I. E. Papadakis, P. Uttley +2
We present over 6.5 years of frequent X-ray observations of the NLS1 galaxy NGC4051 by RXTE together with a >100ks observation by XMM-Newton and so derive a 2-10 keV PSD covering a…
X-ray and optical counterparts of hard X-ray selected sources from the SHEEP survey: first results
K. Nandra, I. Georgantopoulos, M. Brotherton +1
We present followup observations of five hard X-ray sources from the ASCA 5-10 keV SHEEP survey, which has a limiting flux of erg cm s. Chandra data h…
The scaling of the X-ray variability with black hole mass in AGN
I. E. Papadakis
The relation between the 2-10 keV, long term, excess variance and AGN black hole mass is considered in this work. A significant anti-correlation is found between these two quantiti…
Combined Long and Short Timescale X-ray Variability of NGC4051 with RXTE and XMM-Newton
I. M. McHardy, I. E. Papadakis, P. Uttley +2
We present a comprehensive examination of the X-ray variability of the narrow line Seyfert 1 (NLS1) galaxy NGC4051. We combine over 6.5 years of frequent monitoring observations by…
Coordinated Multiwavelength Observations of BL Lacertae in 2000
M. Boettcher
BL Lacertae was the target of an extensive multiwavelength monitoring campaign in the second half of 2000. Simultaneous or quasi-simultaneous observations were taken at radio (UMRA…