Search Publications
The XXL survey: First results and future
Smith, G. P.; Okabe, N.; Chiappetti, L. +108 more
The XXL survey currently covers two 25 deg2 patches with XMM observations of ∼10 ks. We summarize the scientific results associated with the first release of the XXL dataset, which occurred in mid-2016. We review several arguments for increasing the survey depth to 40 ks during the next decade of XMM operations. X-ray (z < 2) cluster…
High-redshift active galactic nuclei and the next decade of Chandra and XMM-Newton
Brandt, W. N.; Vito, F.
We briefly review how X-ray observations of high-redshift active galactic nuclei (AGNs) at z = 4-7 have played a critical role in understanding their basic demographics as well as their physical processes; for example, absorption by nuclear material and winds, accretion rates, and jet emission. We point out some key remaining areas of uncertainty,…
Future of X-ray reverberation from AGN
Fabian, A. C.; Uttley, P.; Cackett, E. M. +3 more
XMM-Newton is capable of making a transformational advance in our understanding of how luminous accreting black holes work, by dedicating about 10% of future observing time to long observations, of order megaseconds, to X-ray variable active galactic nuclei (AGN) research. This would enable reverberation studies, already a commonplace feature of A…
A multi-observatory database of X-ray pulsars in the Magellanic Clouds
Zezas, A.; Antoniou, V.; Coe, M. J. +5 more
Using hundreds of XMM-Newton and Chandra archival observations and nearly a thousand RXTE observations, we have generated a comprehensive library of the known pulsars in the Small and Large Magellanic Clouds (SMC and LMC). The pulsars are detected multiple times across the full parameter spaces of X-ray luminosity (LX = 1031 - 38
On a correlation among azimuthal velocities and the flyby anomaly sign
Acedo, L.; Bel, Ll.
Data of six flybys, those of Galileo I, Galileo II, NEAR, Cassini, Rosetta, and Messenger were reported by Anderson et al. (2008). Four of them: Galileo I, NEAR, Rosetta, and Messenger gain Newtonian energy during the flyby transfer, while Galileo II and Cassini lose energy. In both cases this is a surprising anomaly since Newtonian forces origina…
Follow-up of eROSITA and Euclid Galaxy Clusters with XMM-Newton
Reiprich, T. H.
A revolution in galaxy cluster science is only a few years away. The survey machines eROSITA and Euclid will provide cluster samples of statistical quality never seen before. XMM-Newton will be the key instrument to exploit these rich datasets in terms of detailed follow-up of the cluster hot gas content, systematically characterizing subsamples a…
Stringent limits on the masses of the supermassive black holes in seven nearby galaxies
Morelli, L.; Beifiori, A.; Dalla Bontà, E. +6 more
We present new stringent limits on the mass M• of the central supermassive black hole for a sample of seven nearby galaxies. Our M• estimates are based on the dynamic modeling of the central width of the nebular emission lines measured over sub-arcsecond apertures with the Hubble Space Telescope. The central stellar velocity …
X-ray variability of cool stars: Magnetic activity and accretion
Stelzer, B.
This article provides a review of X-ray variability from late-type stars with particular focus on the achievements of XMM-Newton and its potential for future studies in this field.
A TGAS/Gaia DR1 parallactic distance to the σ Orionis cluster
Caballero, José A.
With the new Tycho-Gaia Astrometric Solution (TGAS), I derive a new parallactic distance to the young σ Orionis open cluster, which is a cornerstone region for studying the formation and evolution of stars and substellar objects from tens of solar masses to a few Jupiter masses. I started with the list of the 46 brightest cluster stars of Caballer…
Exploring accretion disk physics and black hole growth with regular monitoring of ultrafast active galactic nucleus winds
Pounds, K.; Lobban, A.; Nixon, C.
Fifteen years of XMM-Newton observations have established that ultrafast highly ionized winds (UFOs) are common in radio-quiet active galactic nucleus (AGN). A simple theory of Eddington-limited accretion correctly predicts the typical velocity (∼0.1c) and high ionization of such winds, with observed flow energy capable of ejecting star-forming ga…