Search Publications
Exceptional AGN-driven turbulence inhibits star formation in the 3C 326N radio galaxy
Boulanger, F.; Falgarone, E.; Combes, F. +4 more
We detect bright [Cii]λ158 µm line emission from the radio galaxy 3C 326N at z = 0.09, which shows no sign of ongoing or recent star formation (SFR< 0.07 M⊙ yr-1) despite having strong H2 line emission and a substantial amount of molecular gas (2 × 109 M⊙, inferred from the modeling o…
Chromospheric Evaporation in an X1.0 Flare on 2014 March 29 Observed with IRIS and EIS
Ding, M. D.; Li, Y.; Qiu, J. +1 more
Chromospheric evaporation refers to dynamic mass motions in flare loops as a result of rapid energy deposition in the chromosphere. These motions have been observed as blueshifts in X-ray and extreme-ultraviolet (EUV) spectral lines corresponding to upward motions at a few tens to a few hundreds of km s-1. Past spectroscopic observation…
CMB and BAO constraints for an induced gravity dark energy model with a quartic potential
Finelli, F.; Paoletti, D.; Ballardini, M. +1 more
We study the predictions for structure formation in an induced gravity dark energy model with a quartic potential. By developing a dedicated Einstein-Boltzmann code, we study self-consistently the dynamics of homogeneous cosmology and of linear perturbations without using any parametrization. By evolving linear perturbations with initial condition…
Spectral State Dependence of the 0.4-2 MeV Polarized Emission in Cygnus X-1 Seen with INTEGRAL/IBIS, and Links with the AMI Radio Data
Grinberg, Victoria; Pottschmidt, Katja; Wilms, Jörn +6 more
Polarization of the ≳ 400 keV hard tail of the microquasar Cygnus X-1 has been independently reported by INTEGRAL/Imager on Board the INTEGRAL Satellite (IBIS), and INTEGRAL/SPectrometer on INTEGRAL and interpreted as emission from a compact jet. These conclusions were, however, based on the accumulation of all INTEGRAL data regardless of the spec…
The IRAS PSC/FSC Combined Catalogue
Mickaelian, A. M.; Abrahamyan, H. V.; Knyazyan, A. V.
Optical identifications of a few thousands of IRAS sources showed that IRAS Point Source and IRAS Faint Source catalogues (PSC and FSC, respectively) contain many quasars and active galactic nuclei, late-type stars, planetary nebulae, variables, etc. To increase the efficiency of using IRAS PSC and FSC, which contain a lot of common sources, one n…
Cosmography of OB stars in the solar neighbourhood
Bouy, H.; Alves, J.
We construct a 3D map of the spatial density of OB stars within 500 pc from the Sun using the Hipparcos catalogue and find three large-scale stream-like structures that allow a new view on the solar neighbourhood. The spatial coherence of these blue streams and the monotonic age sequence over hundreds of parsecs suggest that they are made of young…
The host galaxies of X-ray selected active galactic nuclei to z = 2.5: Structure, star formation, and their relationships from CANDELS and Herschel/PACS
Berta, S.; Magnelli, B.; Lutz, D. +60 more
We study the relationship between the structure and star formation rate (SFR) of X-ray selected low and moderate luminosity active galactic nuclei (AGNs) in the two Chandra Deep Fields, using Hubble Space Telescope imaging from the Cosmic Assembly Near Infrared Extragalactic Legacy Survey (CANDELS) and deep far-infrared maps from the PEP+GOODS-Her…
A Uniform Contribution of Core-collapse and Type Ia Supernovae to the Chemical Enrichment Pattern in the Outskirts of the Virgo Cluster
Simionescu, A.; Allen, S. W.; Werner, N. +3 more
We present the first measurements of the abundances of α-elements (Mg, Si, and S) extending out beyond the virial radius of a cluster of galaxies. Our results, based on Suzaku Key Project observations of the Virgo Cluster, show that the chemical composition of the intracluster medium is consistent with being constant on large scales, with a flat d…
Free-form lensing implications for the collision of dark matter and gas in the frontier fields cluster MACS J0416.1-2403
Broadhurst, Tom; Lam, Daniel; Lim, Jeremy +2 more
We present a free-form mass reconstruction of the massive lensing cluster MACS J0416.1-2403 using the latest Hubble Frontier Fields data. Our free-form method finds that the extended lensing pattern is generated by two elongated, closely projected clusters of similar mass. Our lens model identifies new lensed images with which we improve the accur…
The Earth: Plasma Sources, Losses, and Transport Processes
Liemohn, Michael W.; Fazakerley, Andrew; Wang, Chih-Ping +12 more
This paper reviews the state of knowledge concerning the source of magnetospheric plasma at Earth. Source of plasma, its acceleration and transport throughout the system, its consequences on system dynamics, and its loss are all discussed. Both observational and modeling advances since the last time this subject was covered in detail (Hultqvist et…