Malzac, Julien, Belmont, Renaud, Fabian, Andrew C.
We investigate the energetics of the jet and X-ray corona of Cyg X-1. We show that the current estimates of the jet power obtained from Halpha and [O III] measurements of the optical nebula...
Constraints on the absorption-dominated model for the X-ray spectrum of MCG-6-30-15 (2009)
Reynolds, Christopher S., Fabian, Andrew C., Brenneman, Laura W., Miniutti, Giovanni, Uttley, Phil, Gallo, Luigi C.
Complexities in the X-ray spectrum of the nearby Seyfert 1.2 galaxy MCG-6-30-15 are commonly interpreted in terms of a broad iron line and the associated Compton reflection hump from the innermost...
X-ray observations of the galaxy cluster PKS 0745-191: To the virial radius, and beyond (2008)
George, Matthew R., Fabian, Andrew C., Sanders, Jeremy S., Young, Andrew J., Russell, Helen R.
We measure X-ray emission from the outskirts of the cluster of galaxies PKS 0745-191 with Suzaku, determining radial profiles of density, temperature, entropy, gas fraction, and mass. These...
On Active Galactic Nuclei as Sources of Ultra-High Energy Cosmic Rays (2008)
George, Matthew R., Fabian, Andrew C., Baumgartner, Wayne H., Mushotzky, Richard F., Tueller, Jack
We measure the correlation between sky coordinates of the Swift BAT catalogue of active galactic nuclei with the arrival directions of the highest energy cosmic rays detected by the Auger...
Grupe, Dirk, Komossa, Stefanie, Gallo, Luigi C., Fabian, Andrew C., Larsson, Josefin, Pradhan, Anil K., ...
We report the discovery of strong soft X-ray emission lines and a hard continuum above 2 keV in the Narrow-Line Seyfert 1 galaxy Mrk 335 during an extremely low X-ray flux state. Mrk 335 was observed...
O'Dea, Christopher P., Baum, Stefi A., Privon, George, Noel-Storr, Jacob, Quillen, Alice C., Zufelt, Nicholas, ...
Quillen et al.(2007) presented an imaging survey with the {\it Spitzer Space Telescope} of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray luminous clusters....
Christopher P. O’dea, Stefi A. Baum, George Privon, Jacob Noel-storr, Alice C. Quillen, Nicholas Zufelt, ...
Quillen et al.(2007) reported on an imaging survey with the Spitzer Space Telescope of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray luminous clusters...
Grupe, Dirk, Komossa, Stefanie, Gallo, Luigi C., Fabian, Andrew C., Larsson, Josefin, Pradhan, Anil K., ...
Broad iron K-alpha emission lines as a diagnostic of black hole spin (2007)
Reynolds, Christopher S., Fabian, Andrew C.
We address the ability of broad iron emission lines from black hole accretion disks to diagnose the spin of the black hole. Using a high-resolution 3-dimensional MHD simulation of a...
Cosmological Constraints From the Cluster Gas Fraction (2007)
Stefano Ettori, Andrew C. Fabian
. We have combined (i) the absolute value of the gas mass fraction observed in clusters of galaxies with (ii) the request that the same gas fraction is constant with respect to the look-back time to...
Cosmological Constraints From the Intracluster Gas Fraction (2007)
Stefano Ettori And, A. Mazure, O. Le Fevre, V. Lebron, Stefano Ettori, ...
. A measure of the cluster baryon fraction can be compared with the present limits on the abundance of the light elements produced during the primordial nucleosynthesis to give a direct constraint on...
ASCA OBSERVATIONS OF THE SPECTRUMOF THE X-RAY BACKGROUND (2007)
Keith C. Gendreau, Richard Mushotzky, Andrew C. Fabian, Tsuneo Kii, Stephen S. Holt, Peter J. Serlemitsos, ...
We present initial results from ASCA on the spectrum of the Cosmic X-ray Background from 0.4 to 10 keV. About 250 ksec of deep survey data has been collected from the performance verification phase...
study of M87 and the core of the Virgo cluster (2007)
Christopher Reynolds, Andrew C. Fabian
We present hard X-ray observations of the nearby radio galaxy M87 and the core of the Virgo cluster using the Rossi X-ray Timing Explorer. These are the first hard X-ray observations of M87 not...
Christopher S. Reynolds, Andrew J. Young, Andrew C. Fabian
The relativistically broad X-ray iron line seen in many AGN spectra is thought to originate from the central regions of the putative black hole accretion disk. Both the line profile and strength will...
Christopher S. Reynolds, Andrew C. Fabian
We present hard X-ray observations of the nearby radio galaxy M87 and the core of the Virgo cluster using the Rossi X-ray Timing Explorer. These are the first hard X-ray observations of M87 not...
Extended inverse-Compton emission from distant, powerful radio galaxies (2007)
Erlund, Mary C., Fabian, Andrew C., Blundell, Katherine M., Celotti, Annalisa, Crawford, Carolin S.
We present Chandra observations of two relatively high redshift FRII radio galaxies, 3C 432 and 3C 191 (z=1.785 and z=1.956 respectively), both of which show extended X-ray emission along the axis of...
Using radio bubbles to constrain the matter content of AGN jets (2007)
Dunn, Robert J.H., Fabian, Andrew C., Celotti, Annalisa
We revisit a method to obtain upper limits on the jet matter content combining synchrotron self-absorption constraints and the large scale bubble energy. We use both X-ray observations, which give...
Radiative pressure feedback by a quasar in a galactic bulge (2007)
Fabian, Andrew C., Celotti, Annalisa, Erlund, Mary C.
We show that Eddington-limited black hole luminosities can be sufficient to deplete a galaxy bulge of gas through radiation pressure, when the ionization state of the gas and the presence of dust are...
Discovery of the low-energy cutoff in a powerful giant radio galaxy (2007)
Blundell, Katherine M., Fabian, Andrew C., Crawford, Carolin S., Erlund, Mary C., Celotti, Annalisa
The lobes of radio galaxies and quasars, fed by jets and hotspots, represent a significant, and currently ill-constrained, source of energy input into the inter-galactic medium (IGM). How much energy...
Radio Source Heating in the ICM: The Example of Cygnus A (2007)
Belsole, Elena, Fabian, Andrew C.
One of the most promising solutions for the cooling flow problem involves energy injection from the central AGN. However it is still not clear how collimated jets can heat the ICM at large scale, and...
Implications of very rapid TeV variability in blazars (2007)
Begelman, Mitchell C., Fabian, Andrew C., Rees, Martin J.
We discuss the implications of rapid (few-minute) variability in the TeV flux of blazars, which has been observed recently with the HESS and MAGIC telescopes. The variability timescales seen in PKS...
Bulk Comptonization spectra in blazars (2007)
Celotti, Annalisa, Ghisellini, Gabriele, Fabian, Andrew C.
We study the time dependent spectra produced via the bulk Compton process by a cold, relativistic shell of plasma moving (and accelerating) along the jet of a blazar, scattering on external photons...
Miniutti, Giovanni, Fabian, Andrew C., Anabuki, Naohisa, Crummy, Jamie, Fukazawa, Yasushi, Gallo, Luigi, ...
The X-ray observatory Suzaku (2007)
Mitsuda, Kazuhisa, Bautz, Mark, Inoue, Hajime, Kelley, Richard L., Koyama, Katsuji, Kunieda, Hideyo, ...
The long Suzaku observation of MCG-6-30-15 (2007)
Miniutti, Giovanni, Fabian, Andrew C., Crummy, Jamie, Larsson, Josefin, Anabuki, Naohisa, Fukazawa, Yasushi, ...
Bulk Comptonization spectra in blazars (2006)
Celotti, Annalisa, Ghisellini, Gabriele, Fabian, Andrew C.
We study the time dependent spectra produced via the bulk Compton process by a cold, relativistic shell of plasma moving (and accelerating) along the jet of a blazar, scattering on external photons...
Kubota, Aya, Dotani, Tadayasu, Cottam, Jean, Kotani, Taro, Done, Chris, Ueda, Yoshihiro, ...
We present the results of six Suzaku observations of the recurrent black hole transient 4U1630-472 during its decline from outburst from February 8 to March 23 in 2006. All observations show the...
Ota, Naomi, Fukazawa, Yasushi, Fabian, Andrew C., Kanemaru, Takehiro, Kawaharada, Madoka, Kawano, Naomi, ...
The Centaurus cluster (z=0.0104) was observed with the X-ray Imaging Spectrometer (XIS) onboard the Suzaku X-ray satellite in three pointings, one centered on the cluster core and the other two...
Miniutti, Giovanni, Fabian, Andrew C., Anabuki, Naohisa, Crummy, Jamie, Fukazawa, Yasushi, Gallo, Luigi, ...
Suzaku has, for the first time, enabled the hard X-ray variability of the Seyfert 1 galaxy MCG-6-30-15 to be measured. The variability in the 14-45 keV band, which is dominated by a strong reflection...
The X-ray spectra of accreting Kerr black holes (2005)
Fabian, Andrew C., Miniutti, Giovanni
The relativistic broad iron lines seen in the X-ray spectra of several active galaxies and Galactic black hole systems are reviewed. Most such objects require emission from within the innermost...
The XMM-Newton view of Mrk3 and IXO30 (2005)
Bianchi, Stefano, Miniutti, Giovanni, Fabian, Andrew C., Iwasawa, Kazushi
We present the analysis of the XMM-Newton EPIC pn spectrum of the Seyfert 2 galaxy, Mrk3. We confirm that the source is dominated by a pure Compton reflection component and an iron K$\alpha$ line,...
Jet-Disc coupling in the accreting black hole XTEJ1118+480 (2004)
Malzac, Julien, Merloni, Andrea, Fabian, Andrew C.
We interpret the rapid correlated UV/optical/ X-ray variability of XTEJ1118+480 as a signature of the coupling between the X-ray corona and a jet emitting synchrotron radiation in the optical band.We...
Jet-disc coupling through a common energy reservoir in the black hole XTE J1118+480 (2004)
Malzac, Julien, Merloni, Andrea, Fabian, Andrew C.
We interpret the rapid correlated UV/optical/ X-ray variability of XTE J1118+480 as a signature of the coupling between the X-ray corona and a jet emitting synchrotron radiation in the optical band....
Buoyant radio-lobes in a viscous intracluster medium (2004)
Reynolds, Christopher S., McKernan, Barry, Fabian, Andrew C., Stone, James M., Vernaleo, John C.
(Abridged) Ideal hydrodynamic models of the intracluster medium (ICM) in the core regions of galaxy clusters fail to explain both the observed temperature structure of this gas, and the observed...
Hashimoto, Yasuhiro, Barcons, Xavier, Boehringer, Hans, Fabian, Andrew C., Hasinger, Guenther, Mainieri, Vincenzo, ...
We report on the XMM-Newton (XMM) observation of RXJ1053.7+5735, one of the most distant X-ray selected clusters of galaxies, which also shows an unusual double-lobed X-ray morphology, indicative of...
Low-luminosity black holes: The case of M87 (2003)
Di Matteo, Tiziana, Allen, Steven W., Fabian, Andrew C., Wilson, Andrew S., Young, Andrew J.
Accretion onto the Supermassive Black Hole in M87 (2002)
Di Matteo, Tiziana, Allen, Steven W., Fabian, Andrew C., Wilson, Andrew S., Young, Andrew J.
Chandra X-ray observations of the giant elliptical galaxy M87 resolve the thermal state of the hot interstellar medium into the accretion (Bondi) radius of its central 3 10^9 Msun black hole. We...
Inhomogeneous Metallicities and Cluster Cooling Flows (2001)
Morris, R. Glenn, Fabian, Andrew C.
The theme of this contribution is the idea that the metals in the intracluster medium (ICM) may be inhomogeneously distributed on small scales. We focus on the possible interplay between this and the...
Evolución : sociedad, ciencia y universo (2001)
Traducción de: Evolution. Society, Science and the Universe
Ruszkowski, Mateusz, Fabian, Andrew C.
The fluorescent iron K$\alpha$ emission line profile provides an excellent probe of the innermost regions of active galactic nuclei. Fe XXV and Fe XXVI in diffuse plasma above the accretion disc can...
Abraham, Roberto G., Ellis, Richard S., Fabian, Andrew C., Tanvir, Nial R., Glazebrook, Karl
We analyse the spatially resolved colours of distant galaxies of known redshift in the Hubble Deep Field, using a new technique based on matching resolved four-band colour data to the predictions of...
Di Matteo, Tiziana, Celotti, Annalisa, Fabian, Andrew C.
We present a model for the different X-ray spectral states displayed by Galactic Black Hole Candidates (GBHC). We discuss the physical and spectral implications for a magnetically structured corona...
Variability of the extreme z=4.72 blazar, GB 1428+4217 (1999)
Fabian, Andrew C., Celotti, Annalisa, Pooley, G., Iwasawa, K., Brandt, W. Niel
We report X-ray and radio variability of GB 1428+4217 which confirm its blazar nature. IR observations reveal a powerful optical-UV component, not obscured by dust, which is suggestive of the...
Abraham, Roberto G., Ellis, Richard S., Fabian, Andrew C., Tanvir, Nial R., Glazebrook, Karl
We analyse the spatially resolved colours of distant galaxies of known redshift in the Hubble Deep Field, using a new technique based on matching resolved four-band colour data to the predictions of...
Spectral evolution of magnetic flares and time lags in accreting black hole sources (1998)
Poutanen, Juri, Fabian, Andrew C.
We present a model for the short timescale spectral variability of accreting black holes. It describes well the time-averaged spectra as well as temporal characteristics such as power-density...
ASCA Observations of the Spectrum of the X-ray Background (1995)
Keith Gendreau, Richard Mushotzky, Andrew C. Fabian, Stephen S. Holt, Peter J. Serlemitsos, Yasushi Fukazawa, ...
We present initial results from ASCA on the spectrum of the Cosmic X-ray Background from 0.4 to 10 keV. About 250 ksec of deep survey data has been collected from the performance verification phase...
Active galactic nuclei are the most powerful, long-lived objects in the Universe. Recent data confirm the theoretical idea that the power source is accretion into a massive black hole. The common...
Active galactic nuclei are the most powerful, long-lived objects in the Universe. Recent data confirm the theoretical idea that the power source is accretion into a massive black hole. The common...