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Athena: ESA's X-ray observatory for the late 2020s
Piro, L.; Nandra, K.; Barcons, X. +8 more
Observations of the X-ray sky after the next decade will most likely be dominated by Athena (Advanced Telescope for High ENergy Astrophysics), the second large mission of ESA's Cosmic Vision 2015-2035 programme. Athena has been conceived to address the "Hot and Energetic Universe" science theme, which focuses on the assembly and evolution of hot b…
Radial metal abundance profiles in the intra-cluster medium of cool-core galaxy clusters, groups, and ellipticals
Zhang, Y. -Y.; Simionescu, A.; Kaastra, J. S. +10 more
The hot intra-cluster medium (ICM) permeating galaxy clusters and groups is not pristine, as it has been continuously enriched by metals synthesised in Type Ia (SNIa) and core-collapse (SNcc) supernovae since the major epoch of star formation (z ≃ 2-3). The cluster/group enrichment history and mechanisms responsible for releasing and mixing the me…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the Fourier space wedges of the final sample
Streblyanska, Alina; Brownstein, Joel R.; Eisenstein, Daniel J. +25 more
We extract cosmological information from the anisotropic power-spectrum measurements from the recently completed Baryon Oscillation Spectroscopic Survey (BOSS), extending the concept of clustering wedges to Fourier space. Making use of new fast-Fourier-transform-based estimators, we measure the power-spectrum clustering wedges of the BOSS sample b…
A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission
Genzel, R.; Hailey, C.; Harrison, F. +21 more
We present the first fully simultaneous fits to the near-infrared (NIR) and X-ray spectral slope (and its evolution) during a very bright flare from Sgr A*, the supermassive black hole at the Milky Way's centre. Our study arises from ambitious multiwavelength monitoring campaigns with XMM-Newton, NuSTAR and SINFONI. The average multiwavelength spe…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: on the measurement of growth rate using galaxy correlation functions
Brownstein, Joel R.; Ho, Shirley; Eisenstein, Daniel J. +16 more
We present a measurement of the linear growth rate of structure, f, from the Sloan Digital Sky Survey III (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12 (DR12) using convolution Lagrangian perturbation theory (CLPT) with Gaussian streaming redshift space distortions (GSRSD) to model the two-point statistics of BOSS galax…
Fundamental parameters and infrared excesses of Tycho-Gaia stars
Zijlstra, A. A.; McDonald, I.; Watson, R. A.
Effective temperatures and luminosities are calculated for 1475 921 Tycho-2 and 107 145 Hipparcos stars, based on distances from Gaia Data Release 1. Parameters are derived by comparing multi-wavelength archival photometry to bt-settl model atmospheres. The 1σ uncertainties for the Tycho-2 and Hipparcos stars are ±137 and ±125 K in temperature and…
From ultraluminous X-ray sources to ultraluminous supersoft sources: NGC 55 ULX, the missing link
Fabian, A. C.; Pinto, C.; Soria, R. +8 more
In recent work with high-resolution reflection grating spectrometers (RGS) aboard XMM-Newton, Pinto et al. have discovered that two bright and archetypal ultraluminous X-ray sources (ULXs) have strong relativistic winds in agreement with theoretical predictions of high accretion rates. It has been proposed that such winds can become optically thic…
SONS: The JCMT legacy survey of debris discs in the submillimetre
Matthews, Brenda C.; Duchêne, Gaspard; Chen, Christine H. +32 more
Debris discs are evidence of the ongoing destructive collisions between planetesimals, and their presence around stars also suggests that planets exist in these systems. In this paper, we present submillimetre images of the thermal emission from debris discs that formed the SCUBA-2 Observations of Nearby Stars (SONS) survey, one of seven legacy su…
The Surface UV Environment on Planets Orbiting M Dwarfs: Implications for Prebiotic Chemistry and the Need for Experimental Follow-up
Ranjan, Sukrit; Sasselov, Dimitar D.; Wordsworth, Robin
Potentially habitable planets orbiting M dwarfs are of intense astrobiological interest because they are the only rocky worlds accessible to biosignature search over the next 10+ years because of a confluence of observational effects. Simultaneously, recent experimental and theoretical work suggests that UV light may have played a key role in the …
The Konus-Wind Catalog of Gamma-Ray Bursts with Known Redshifts. I. Bursts Detected in the Triggered Mode
Cline, T.; Hurley, K.; Golenetskii, S. +8 more
In this catalog, we present the results of a systematic study of gamma-ray bursts (GRBs) with reliable redshift estimates detected in the triggered mode of the Konus-Wind (KW) experiment during the period from 1997 February to 2016 June. The sample consists of 150 GRBs (including 12 short/hard bursts) and represents the largest set of cosmological…