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61 papers · 1 filter
Invertibility of ideals in Prufer extensions
Carmelo Antonio Finocchiaro, Francesca Tartarone
Using the general approach to invertibility for ideals in ring extensions given by Knebush-Zhang, we investigate about connections between faithfully flatness and invertibility for…
Broadband X-ray spectral analysis of the Seyfert 1 galaxy GRS 1734-292
A. Tortosa, A. Marinucci, G. Matt +14
We discuss the broadband X-ray spectrum of GRS 1734-292 obtained from non-simultaneous XMM-Newton and NuSTAR observations, performed in 2009 and 2014, respectively. GRS1734-292 is…
Cross-correlating the gamma-ray sky with catalogs of galaxy clusters
Enzo Branchini, Stefano Camera, Alessandro Cuoco +4
We report the detection of a cross-correlation signal between {\it Fermi} Large Area Telescope diffuse gamma-ray maps and catalogs of clusters. In our analysis, we considered three…
A time-step approximation scheme for a viscous version of the Vlasov equation
Ugo Bessi
Gomes and Valdinoci have introduced a time-step approximation scheme for a viscous version of Aubry-Mather theory; this scheme is a variant of that of Jordan, Kinderlehrer and Otto…
A cost on paths of measures which induces the Fokker-Planck equation
Ugo Bessi
J. Feng and T. Nguyen have defined a cost on curves of measures which is finite exactly on the curves which solve a Fokker-Planck equation with drift. In this paper, using id…
The WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars
M. Bischetti, E. Piconcelli, G. Vietri +19
Models and observations suggest that both power and effects of AGN feedback should be maximised in hyper-luminous (L_Bol>10^47 erg/s) quasars, i.e. objects at the brightest end of…