Results 51 to 60 of about 2,413,471 (156)
Engineering Reports, Volume 7, Issue 3, March 2025.We present the details of implementing a highly efficient and scalable Cosmological N‐body simulation framework on the heterogeneous many‐core supercomputer Sunway TaihuLight. We manage to conduct cosmological simulations which contain up to 1.6 trillion particles, obtaining a sustained performance of 56.3 PFlops with a weak‐scaling parallel efficiency
Zhao Liu +8 more
wiley +1 more source
Are truncated stellar disks linked to the molecular gas density? [PDF]
, 2007 We know that the slope of the radial, stellar light distribution in galaxies is well described by an exponential decline and this distribution is often truncated at a break radius ($R_{br}$).
Bettoni, D. +5 more
core +1 more source
Fortschritte der Physik, Volume 73, Issue 3, March 2025.Abstract Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, the simultaneous effects of these dark sectors on the Euler–Heisenberg black hole are investigated, using the quintessence matter field and perfect fluid to model them. In particular, the black hole's thermodynamics,
Bilel Hamil, Bekir Can Lütfüoğlu
wiley +1 more source
Kinematics and stellar populations in active galaxies: the LINER NGC 4579 (M58) [PDF]
, 1997 This is an electronic version of an article published in Astronomy and Astrophysics. Palacios, J., García-Vargas, M.L., Diaz, A., Terlevich, R. and E. Terlevich. Kinematics and stellar populations in active galaxies: the LINER NGC 4579 (M58).
Díaz, Angeles I. +4 more
core +1 more source
Multi-Frequency Study of the SZ Effect in Cosmic Structures [PDF]
, 2014 The Sunyaev-Zel’dovich effect (SZE) is a relevant probe for cosmology and astrophysics. A multi-frequency approach to study the SZE in cosmic structures turns out to be crucial in the use of this probe for astrophysics and cosmology.
Colafrancesco, Sergio
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 ...
J. Xavier Prochaska, Marcel Neeleman
openaire +3 more sources
Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.Abstract Sudden Stratospheric Warmings (SSW) and Elevated Stratopause (ES) events are mid‐to‐high latitudinal, atmospheric wave‐driven phenomena leading to significant changes in wind, temperatures, and vertical mass transport, especially at stratospheric and mesospheric altitudes.
H. Schneider +5 more
wiley +1 more source
A Progress Report on the Caltech Faint Galaxy Redshift Survey [PDF]
, 2000 I review recent progress on determining the spectral energy distributions and luminosity functions for galaxies in the large magnitude limited sample in the region of the HDF-North of the Caltech Faint Galaxy Redshift Survey.Comment: Invited contribution
Cohen, Judith
core +2 more sources
Observations of Lenticular Galaxies at the 6-m Telescope of the Special Astrophysical Observatory [PDF]
GROUND-BASED ASTRONOMY IN RUSSIA. 21ST CENTURY. Proceedings of the All-Russian Conference, 2020 This is a historical review covering the last 30 years of the observational study of lenticular galaxies at the 6m telescope BTA of the Special Astrophysical Observatory of the Russian Academy of Sciences. The development of spectroscopic techniques at the BTA has allowed to get comprehensive information about this class of stellar systems, starting ...
openaire +4 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
Jake Vanderplas +3 more
openaire +3 more sources