Results 1 to 10 of about 3,357 (48)

Solar and Stellar Photospheric Abundances [PDF]

open access: yes, 2016
The determination of photospheric abundances in late-type stars from spectroscopic observations is a well-established field, built on solid theoretical foundations.
Prieto, Carlos Allende
core   +10 more sources

The production of proton-rich isotopes beyond iron: The ?-process in stars [PDF]

open access: yes, 2016
© 2016 World Scientific Publishing Company. Beyond iron, a small fraction of the total abundances in the Solar System is made of proton-rich isotopes, the p-nuclei.
, , Pignatari, Marco, Travaglio, Claudia
core   +3 more sources

Pre-DECIGO can get the smoking gun to decide the astrophysical or cosmological origin of GW150914-like binary black holes [PDF]

open access: yes, 2016
Pre-DECIGO consists of three spacecraft arranged in an equilateral triangle with 100km arm lengths orbiting 2000km above the surface of the earth. It is hoped that the launch date will be in the late 2020s. Pre-DECIGO has one clear target: binary black
Akutsu, Tomotada   +11 more
core   +2 more sources

On the distribution of stellar-sized black hole spins [PDF]

open access: yes, 2016
Black hole spin will have a large impact on searches for gravitational waves with advanced detectors. While only a few stellar mass black hole spins have been measured using X-ray techniques, gravitational wave detectors have the capacity to greatly ...
Nielsen, Alex B.
core   +3 more sources

Astrophysics and cosmology with a deci-hertz gravitational-wave detector: TianGO [PDF]

open access: yes, 2019
We present the astrophysical science case for a space-based, deci-Hz gravitational-wave (GW) detector. We particularly highlight an ability in inferring a source's sky location, both when combined with a network of ground-based detectors to form a long ...
Adhikari, Rana X.   +3 more
core   +3 more sources

Observations of Cool-Star Magnetic Fields [PDF]

open access: yes, 2012
Cool stars like the Sun harbor convection zones capable of producing substantial surface magnetic fields leading to stellar magnetic activity. The influence of stellar parameters like rotation, radius, and age on cool-star magnetism, and the importance ...
Reiners, Ansgar
core   +2 more sources

Stellar convective cores as dark matter probes

open access: yes, 2015
The recent detection of a convective core in a main-sequence solar-type star is used here to test particular models of dark matter (DM) particles, those with masses and scattering cross sections in the range of interest for the DM interpretation of the ...
Brandão, Isa M.   +2 more
core   +3 more sources

Computation of atomic astrophysical opacities

open access: yes, 2018
The revision of the standard Los Alamos opacities in the 1980-1990s by a group from the Lawrence Livermore National Laboratory (OPAL) and the Opacity Project (OP) consortium was an early example of collaborative big-data science, leading to reliable data
Mendoza, Claudio
core   +1 more source

The Double-Dark Portal

open access: yes, 2014
In most models of the dark sector, dark matter is charged under some new symmetry to make it stable. We explore the possibility that not just dark matter, but also the force carrier connecting it to the visible sector is charged under this symmetry. This
Curtin, David, Tsai, Yuhsin
core   +1 more source

Millisecond pulsars modelled as strange quark stars admixed with condensed dark matter

open access: yes, 2018
We study for the first time how a new class of stars could impact an ensemble of pulsars with known masses and spin-periods. These new compact objects are strange stars admixed with condensed dark matter. In this exploratory theoretical work, our goal is
Lopes, Ilídio, Panotopoulos, Grigoris
core   +1 more source

Home - About - Disclaimer - Privacy