Results 101 to 110 of about 298,499 (308)

Baryonic Imprints on DM Halos: the concentration-mass relation and its dependence on halo and galaxy properties

The Open Journal of Astrophysics
The halo concentration-mass relation has ubiquitous use in modeling the matter field for cosmological and astrophysical analyses, and including the imprints from galaxy formation physics is tantamount to its robust usage.
Mufan Shao, Dhayaa Anbajagane
doaj   +1 more source

Neutrinos in astrophysics and cosmology [PDF]

AIP Conference Proceedings, 2016
6 pages, Proceedings of IX International Conference on Interconnections between Particle Physics and Cosmology (PPC2015)
openaire   +2 more sources

Model Calculations for Cosmogenic Nuclides in Meteorites and the Lunar Surface. 1. Long‐lived Radionuclides

Meteoritics &Planetary Science, EarlyView.
Abstract Production rates for the cosmogenic radionuclides 10Be, 14C, 26Al, 36Cl, 41Ca, 53Mn, and 60Fe in a large variety of meteorites, that is, ordinary chondrites (H, L, LL), carbonaceous chondrites, HED meteorites, ureilites, Martian meteorites, and iron meteorites and in the uppermost ~2 m of the lunar surface are modeled.
Ingo Leya
wiley   +1 more source

Echoes from the dark: Galaxy catalog incompleteness in standard siren cosmology

Astronomy & Astrophysics
Gravitational wave observations can be combined with galaxy catalogs to constrain cosmology and test modified gravity theories using the standard siren method.
Borghi Nicola, Moresco Michele, Tagliazucchi Matteo, Cuomo Giulia   +3 more
doaj   +1 more source

Microspherules Formed by Lightning Strikes

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley   +1 more source

The Atacama Cosmology Telescope: Machine-learning-driven Tools for Detecting Millimeter Sources in Timestream Preprocessing

The Astrophysical Journal
We present a new pipeline utilizing machine learning for classifying short-duration features in raw time-ordered data (TOD) of cosmic microwave background survey observations. The pipeline, specifically designed for the Atacama Cosmology Telescope, works
Simran K. Nerval, Erika Hornecker, Yilun Guan, Zeling Zhang, Adam Hincks, Emily Biermann, J. Richard Bond, Justin Clancy, Rolando Dünner, Allen Foster, Carlos Hervías-Caimapo, Renée Hložek, Thomas W. Morris, Sigurd Næss, John Orlowski-Scherer, Cristóbal Sifón, Jesse Treu   +16 more
doaj   +1 more source

Testing a Dilaton Gravity Model Using Nucleosynthesis

Advances in High Energy Physics, 2014
Big bang nucleosynthesis (BBN) offers one of the most strict evidences for the Λ-CDM cosmology at present, as well as the cosmic microwave background (CMB) radiation.
S. Boran, E. O. Kahya
doaj   +1 more source

Dark Matter Annihilation and the PAMELA, FERMI and ATIC Anomalies

, 2012
If dark matter (DM) annihilation accounts for the tantalizing excess of cosmic ray electron/positrons, as reported by the PAMELA, ATIC, HESS and FERMI observatories, then the implied annihilation cross section must be relatively large.
A. A. El Zant, H. Okada, O. Adriani, S. Khalil   +3 more
core   +1 more source

Terrestrial ages of meteorites from the Atacama Desert (Chile) and insights into the past meteorite flux to Earth

Meteoritics &Planetary Science, EarlyView.
Abstract The Atacama Desert in Chile is characterized by its high meteorite density and old meteorite terrestrial ages. In this work, we present new terrestrial ages derived from measurements of the concentration of cosmogenic 36Cl in the metal fraction of 51 ordinary chondrites collected over a 6.8 km2 area located in the Catalina Dense Collection ...
Carine Sadaka, Jérôme Gattacceca, Florian Dumas, Régis Braucher, ASTER Team, Ingo Leya, Mohammad Tauseef, Pierre‐Henri Blard, David Bekaert, Evelyn Füri, Laurent Zimmermann, Anthony Lagain, Hadrien A. R. Devillepoix, Matthieu Gounelle   +13 more
wiley   +1 more source

Baryogenesis in Lorentz-violating gravity theories

Physics Letters B, 2017
Lorentz-violating theories of gravity typically contain constrained vector fields. We show that the lowest-order coupling of such vectors to U(1)-symmetric scalars can naturally give rise to baryogenesis in a manner akin to the Affleck–Dine mechanism. We
Jeremy Sakstein, Adam R. Solomon
doaj   +1 more source