Results 1 to 10 of about 118,585 (161)
Astrophysical probes of the Vainshtein mechanism: Stars and galaxies [PDF]
Physical Review D, 2015 Ghost-free theories beyond the Horndeski class exhibit a partial breaking of the Vainshtein mechanism inside non-relativistic sources of finite extent. We exploit this breaking to identify new and novel astrophysical probes of these theories. Non-relativistic objects feel a gravitational force that is weaker than that predicted by general relativity ...
Koyama, Kazuya, Sakstein, Jeremy
openaire +4 more sources
Astrophysically Motivated Bulge-Disk Decompositions of SDSS Galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 28 pages, 34 figures, MNRAS ...
Lackner, C. N., Gunn, J. E.
openaire +3 more sources
Cold fronts: probes of plasma astrophysics in galaxy clusters [PDF]
Journal of Plasma Physics, 2016 The most massive baryonic component of galaxy clusters is the ‘intracluster medium’ (ICM), a diffuse, hot, weakly magnetized plasma that is most easily observed in the X-ray band. Despite being observed for decades, the macroscopic transport properties of the ICM are still not well constrained.
Roediger, Elke, ZuHone, John A.
openaire +3 more sources
Studies of Seyfert galaxies in Fesenkov Astrophysical Institute
Communications of the Byurakan Astrophysical Observatory, 2020 This article provides an overview of the main research results of a large group of Seyfert galaxies, carried out at Fesenkov Astrophysical Institute (FAI) over the past 50 years. Spectral observations have been performed since 1970. At an early stage, a three cascade image-tube (UM-92) was used as a radiation receiver.
E. Denissyuk +5 more
openaire +1 more source
A new chemodynamical tool to study the evolution of galaxies in the local Universe: a quick and accurate numerical technique to compute gas cooling rate for any chemical composition [PDF]
, 2007 We have developed a quick and accurate numerical tool to compute gas cooling whichever its chemical composition.Comment: 3 pages, 2 figures, to appear in the Proceedings of "Heating vs.
Champavert, Nicolas, Wozniak, Hervé
core +2 more sources
Local and large-scale effects on the astrophysics of void galaxies
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Galaxies in cosmic voids have been reported with properties related to a delayed evolution compared to the rest of the Universe. These characteristics reflect the interaction of galaxies with the environment. However, it is not clear the degree of influence of the large-scale structure on the properties of void galaxies or if ...
Agustín M Rodríguez-Medrano +5 more
openaire +3 more sources
Tales within Tales and Cutoffs within Cutoffs: What Sets the Mass Scale for Galaxies? [PDF]
, 2001 Please answer ``yes'' or ``no'': 1. Does the mass function for clusters of galaxies cut off exponentially? 2. Does the luminosity function for galaxies cut off exponentially? 3. Is the dependence of virial velocity on galaxy luminosity a power law?
Schechter, Paul L.
core +3 more sources
The astrophysical consequences of intervening galaxy gas on fast radio bursts [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We adopt and analyze results on the incidence and physical properties of damped Ly$ $ systems (DLAs) to predict the astrophysical impact of gas in galaxies on observations of Fast Radio Bursts (FRBs). Three DLA measures form the basis of this analysis: (i) the HI column density distribution, parameterized as a double power-law; (ii) the incidence of ...
Prochaska, J. Xavier, Neeleman, Marcel
openaire +2 more sources
Astrophysics on the GRAPE Family of Special Purpose Computers [PDF]
, 1998 The GRAPE-4, the world's fastest computer in 1995-1997, has produced some major scientific results, through a wide diversity of large-scale simulations in astrophysics.
Hut, Piet, Makino, Jun
core +3 more sources
Astrophysical tests of modified gravity: the morphology and kinematics of dwarf galaxies [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 This paper is the third in a series on tests of gravity using observations of stars and nearby dwarf galaxies. We carry out four distinct tests using published data on the kinematics and morphology of dwarf galaxies, motivated by the theoretical work of Hui et al. (2009) and Jain and Vanderplas (2011). In a wide class of gravity theories a scalar field
Vikram, Vinu +3 more
openaire +2 more sources