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XMM-Newton observations of the eclipsing polar EP Dra
Cropper, Mark; Ramsay, Gavin; Priedhorsky, W. +3 more
We present XMM-Newton observations of the eclipsing polar EP Dra that cover nearly three binary orbital cycles. The X-ray and ultraviolet data show evidence for a prominent dip before the eclipse, which is due to the accretion stream obscuring the accretion region. The dip ingress is rapid in hard X-rays, suggesting that there is a highly collimat…
XMM-Newton spectroscopy of high-redshift quasars
Córdova, F. A.; Mason, K. O.; Puchnarewicz, E. M. +2 more
We present XMM-Newton X-ray spectra and optical photometry of four high-redshift (z= 2.96-3.77) quasars, [HB89] 0438-436, [HB89] 2000-330, [SP89] 1107+487 and RX J122135.6+280613 of these four objects, the first two are radio-loud and the last two are radio-quiet. Model fits require only a power law with Galactic absorption in each case; additiona…
Hα kinematics of a z~ 1 disc galaxy from near-infrared integral field spectroscopy
Aragón-Salamanca, A.; Swinbank, A. M.; Abraham, R. G. +6 more
In this Letter we present the first 3D spectroscopic study of Hα emission in a z~ 1 field galaxy with an integral field unit. Using the Cambridge Infrared Panoramic Survey Spectrograph (CIRPASS) on Gemini-South, we map the spatial and velocity distribution of Hα emission in the z= 0.819 galaxy CFRS 22.1313. We detect two Hα emitting regions with a…
XMM-Newton surveys of the Canada-France Redshift Survey fields - II. The X-ray catalogues, the properties of the host galaxies and the redshift distribution
Nandra, K.; Lilly, S.; McCracken, H. J. +5 more
We present the X-ray source catalogues for the XMM surveys of the 3-h and 14-h Canada-France Redshift Survey fields (0.5-10 keV flux range ~2 × 10-15-10-13 erg cm-2 s-1). We use a subset of the XMM sources, which have Chandra positions, to determine the best method of obtaining optical identifications of…
The narrow-line quasar NAB 0205+024 observed with XMM-Newton
Brandt, W. N.; Vaughan, S.; Fabian, A. C. +2 more
The XMM-Newton observation of the narrow-line quasar NAB 0205+024 reveals three striking differences since it was last observed in X-rays with ASCA. First, the 2-10 keV power law is notably steeper. Secondly, a hard X-ray flare is detected, very similar to that seen in I Zw 1. Thirdly, a strong and broad emission feature is detected with the bulk …
Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 and A370
Kneib, J. -P.; Lewis, G. F.; Ibata, R. A. +1 more
After decades of searching, the true nature of dark matter still eludes us. One potential probe of the form of dark matter in galaxy clusters is to search for microlensing variability in the giant arcs and arclets. In this paper, a simple method is introduced to characterize pixel variability in the limit of high optical depth to microlensing. Exp…
Inferring the coronal flaring patterns in active galactic nuclei from reverberation maps
Lasenby, A. N.; Goyder, R.
The relativistically broadened iron Kα line at 6.4 keV observed in the Seyfert 1 galaxy MCG-6-30-15 has provided a probe of the strong-gravity environment near a black hole, in particular suggesting that it is rapidly spinning. An important variable in such analyses is the geometry of the illuminating source. We present a new technique that constr…
XMM-Newton observations of the relaxed, high-redshift galaxy cluster ClJ0046.3+8530 at z= 0.62
Gondoin, P.; Maughan, B. J.; Ebeling, H. +2 more
A detailed analysis of XMM-Newton observations of ClJ0046.3+8530 (z= 0.624) is presented. The cluster has a moderate temperature (kT= 4.1 +/- 0.3 keV) and appears to be relaxed. Emission is detected at >=3σ significance to a radius of 88 per cent of R200 (the radius enclosing an overdensity of 200 times the critical density at z= 0.6…
The XMM-Newton/2dF survey - VII. Is there any X-ray absorption in optically selected QSOs?
Georgakakis, A.; Georgantopoulos, I.; Akylas, A.
We explore the X-ray properties of optically selected quasi-stellar objects (QSOs) spectroscopically identified in the course of the 2dF QSO survey (2QZ). Our main goal is to expand to higher redshifts, previous findings suggesting the presence of a fraction of X-ray obscured sources among the low-redshift, optically selected, broad line active ga…
Principal component analysis of International Ultraviolet Explorer galaxy spectra
Brosch, Noah; Formiggini, Liliana
We analyse the UV spectral energy distribution of a sample of normal galaxies listed in the International Ultraviolet Explorer (IUE) Newly Extracted Spectra (INES) Guide No. 2 - Normal Galaxies using a principal component analysis. The sample consists of the IUE short-wavelength (SW) spectra of the central regions of 118 galaxies, where the IUE ap…