Search Publications
Planck 2018 results. I. Overview and the cosmological legacy of Planck
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +192 more
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857 GHz.…
The XMM-Newton serendipitous survey. IX. The fourth XMM-Newton serendipitous source catalogue
Motch, C.; Page, M. J.; Ballet, J. +28 more
Context. Sky surveys produce enormous quantities of data on extensive regions of the sky. The easiest way to access this information is through catalogues of standardised data products. XMM-Newton has been surveying the sky in the X-ray, ultra-violet, and optical bands for 20 years.
Aims: The XMM-Newton Survey Science Centre has been producin…
Probing cosmic isotropy with a new X-ray galaxy cluster sample through the LX-T scaling relation
Lovisari, L.; Pacaud, F.; Ramos-Ceja, M. E. +3 more
The isotropy of the late Universe and consequently of the X-ray galaxy cluster scaling relations is an assumption greatly used in astronomy. However, within the last decade, many studies have reported deviations from isotropy when using various cosmological probes; a definitive conclusion has yet to be made. New, effective and independent methods …
Quasars as standard candles. III. Validation of a new sample for cosmological studies
Marconi, A.; Vignali, C.; Gilli, R. +15 more
We present a new catalogue of ∼2400 optically selected quasars with spectroscopic redshifts and X-ray observations from either Chandra or XMM-Newton. The sample can be used to investigate the non-linear relation between the ultraviolet (UV) and X-ray luminosity of quasars as well as to build a Hubble diagram up to a redshift of z ∼ 7.5. We selecte…
X-ray quasi-periodic eruptions from the galactic nucleus of RX J1301.9+2747
Miniutti, Giovanni; Giustini, Margherita; Saxton, Richard D.
Following the recent discovery of X-ray quasi-periodic eruptions (QPEs) coming from the nucleus of the galaxy GSN 069, here we report on the detection of QPEs in the active galaxy named RX J1301.9+2747. QPEs are rapid and recurrent increases of the X-ray count-rate by more than one order of magnitude with respect to a stable quiescent level. Durin…
Relation of X-ray activity and rotation in M dwarfs and predicted time-evolution of the X-ray luminosity
Scholz, A.; Stelzer, B.; Covey, K. R. +3 more
The relation of activity to rotation in M dwarfs is of high astrophysical interest because it provides observational evidence of the stellar dynamo, which is poorly understood for low-mass stars, especially in the fully convective regime. Previous studies have shown that the relation of X-ray activity to rotation consists of two different regimes:…
Hydrodynamic simulations unravel the progenitor-supernova-remnant connection in SN 1987A
Miceli, M.; Bocchino, F.; Orlando, S. +8 more
Context. Massive stars end their lives in catastrophic supernova (SN) explosions. Key information on the explosion processes and on the progenitor stars can be extracted from observations of supernova remnants (SNRs), which are the outcome of SNe. Deciphering these observations, however, is challenging because of the complex morphology of SNRs.
First detection of stacked X-ray emission from cosmic web filaments
Aghanim, N.; Douspis, M.; Malavasi, N. +2 more
We report the first statistical detection of X-ray emission from cosmic web filaments in ROSAT data. We selected 15 165 filaments at 0.2 < z < 0.6 ranging from 30 Mpc to 100 Mpc in length, identified in the Sloan Digital Sky Survey survey. We stacked the X-ray count-rate maps from ROSAT around the filaments, excluding resolved galaxy groups …
Collimated synchrotron threads linking the radio lobes of ESO 137-006
Govoni, F.; Ramaila, A. J. T.; Serra, P. +14 more
We present MeerKAT 1000 MHz and 1400 MHz observations of a bright radio galaxy in the southern hemisphere, ESO 137-006. The galaxy lies at the centre of the massive and merging Norma galaxy cluster. The MeerKAT continuum images (rms ∼0.02 mJy beam-1 at ∼10″ resolution) reveal new features that have never been seen in a radio galaxy befo…
The XMM-Newton serendipitous survey. X. The second source catalogue from overlapping XMM-Newton observations and its long-term variable content
Motch, C.; Page, M. J.; Ballet, J. +12 more
Context. The XMM-Newton Survey Science Centre Consortium (SSC) develops software in close collaboration with the Science Operations Centre to perform a pipeline analysis of all XMM-Newton observations. In celebration of the twentieth anniversary of the XMM-Newton launch, the SSC has compiled the fourth generation of serendipitous source catalogues…