Search Publications
X-ray background measurements with XMM-Newton EPIC
De Luca, A.; Warwick, R. S.; Page, M. +1 more
We discuss the methods used to compile a high signal-to-noise dataset representative of both the instrumental and cosmic background signal measured at high galactic latitude by the XMM-Newton EPIC cameras. The characteristics of the EPIC background are described and the potential applications of the derived dataset in general science analysis are …
Re-examining the X-ray versus spin-down luminosity correlation of rotation powered pulsars
Mereghetti, S.; Possenti, A.; Cerutti, R. +1 more
The empirical relation between the X-ray luminosity (in the 2-10 keV band) and the rate of spin-down energy loss Lsd of a sample of 39 pulsars is re-examined considering recent data from ASCA, RXTE, BeppoSAX, Chandra, and XMM-Newton and including statistical and systematic errors. The data show a significant scatter around an average co…
XMM-Newton observation of the Lockman Hole. II. Spectral analysis
Hasinger, G.; Mainieri, V.; Rosati, P. +5 more
We present the results of the X-ray spectral analysis of the first deep X-ray survey with the XMM-Newton observatory during Performance Verification. The X-ray data of the Lockman Hole field and the derived cumulative source counts were reported by Hasinger et al. (2001). We restrict the analysis to the sample of 98 sources with more than 70 net c…
The new emerging model for the structure of cooling cores in clusters of galaxies
Böhringer, H.; Churazov, E.; Chen, Y. +2 more
New X-ray observations with XMM-Newton show a lack of spectral evidence for large amounts of cooling and condensing gas in the centers of galaxy clusters believed to harbour strong cooling flows. This paper re-explores the cooling flow scenario in the light of the new observations. We explore the diagnostics of the temperature structure of cooling…
The mass profile of A1413 observed with XMM-Newton: Implications for the M-T relation
Arnaud, M.; Pratt, G. W.
We present an XMM-Newton et al. observation of A1413, a hot (kT = 6.5 kev ) galaxy cluster at z=0.143. We construct gas and temperature profiles over the radial range up to ~ 1700 kpc. This radius corresponds to a density contrast delta ~ 500 with respect to the critical density at the redshift of the cluster, or equivalently ~ 0.7 r200…
X-ray spectral imaging and Doppler mapping of Cassiopeia A
Kaastra, J. S.; Vink, J.; Bleeker, J. A. M. +2 more
We present a detailed X-ray spectral analysis of Cas A using a deep exposure from the EPIC-MOS cameras on-board XMM-Newton. Spectral fitting was performed on a 15x15 grid of 20″ x 20″ pixels using a two component non-equilibrium ionisation model (NEI) giving maps of ionisation age, temperature, interstellar column density, abundances for Ne, Mg, S…
XMM-Newton observation of M 87. I. Single-phase temperature structure of intracluster medium
Finoguenov, A.; Böhringer, H.; Matsushita, K. +1 more
We report the results of a detailed analysis of the temperature structure of the X-ray emitting plasma halo of M 87, the cD galaxy of the Virgo Cluster. Using the MEKAL model, the data provide strong indications that the intracluster medium has a single phase structure locally, except the regions associated with the radio structures. The deproject…
The AGN contribution to mid-infrared surveys. X-ray counterparts of the mid-IR sources in the Lockman Hole and HDF-N
Altieri, B.; Elbaz, D.; Franceschini, A. +5 more
We provide constraints on the AGN contribution to the mid-IR extragalactic background light from a correlation analysis of deep X-ray and mid-IR observations in two regions centred on the Lockman Hole and Hubble Deep Field North (HDF-N). The Lockman region, of more than 200 square arcminutes, was observed by ISOCAM and XMM-Newton to a depth of 0.3…
XMM-Newton observation of the distant (z=0.6}) galaxy cluster RX J1120.1+4318
Aghanim, N.; Arnaud, M.; Giard, M. +11 more
We report on a 20 ks XMM observation of the distant cluster RX J1120.1+4318, discovered at z=0.6 in the SHARC survey. The cluster has a regular spherical morphology, suggesting it is in a relaxed state. The combined fit of the EPIC/MOS&pn camera gives a cluster mean temperature of kT= 5.3+/-0.5 kev with an iron abundance of 0.47+/-0.19. The te…
High-resolution X-ray spectroscopy of Procyon by Chandra and XMM-Newton
Kaastra, J. S.; Raassen, A. J. J.; Mewe, R. +6 more
We report the analysis of the high-resolution soft X-ray spectrum of the nearby F-type star Procyon in the wavelength range from 5 to 175 Å obtained with the Low Energy Transmission Grating Spectrometer (LETGS) on board Chandra and with the Reflection Grating Spectrometers (RGS) and the EPIC-MOS CCD spectrometers on board XMM-Newton. Line fluxes h…