Results 21 to 30 of about 424,433 (291)
Nonlinear Spectroscopy of Alkali Atoms in Cold Medium of Astrophysical Relevance
Atoms, 2017 The time-dependent population dynamics of hyperfine (HF) sublevels of n 2 p 3 / 2 atomic states upon laser excitation in a cold medium of alkali atoms is examined.
Dmitry K. Efimov +7 more
doaj +1 more source
Galaxies, 2022 The detection of gravitational-wave signals by the LIGO and Virgo observatories during the past few years has ushered us into the era of gravitational-wave astronomy, shifting our focus from detection to source parameter estimation.
Sudarshan Karki +2 more
doaj +1 more source
Precision laboratory UV and IR wavelengths for cosmological and astrophysical applications [PDF]
, 2007 The quality of astronomical spectra is now so high that the accuracy of the laboratory data is getting more and more important for the analysis and interpretation.
Aldenius, M., Johansson, S.
core +4 more sources
EXONEST: The Bayesian Exoplanetary Explorer
Entropy, 2017 The fields of astronomy and astrophysics are currently engaged in an unprecedented era of discovery as recent missions have revealed thousands of exoplanets orbiting other stars.
Kevin H. Knuth +6 more
doaj +1 more source
Direct Reactions with Exotic Nuclei, Nuclear Structure and Astrophysics [PDF]
, 2006 Intermediate energy Coulomb excitation and dissociation is a useful tool for nuclear structure and astrophysics studies. Low-lying strength in nuclei far from stability was discovered by this method.
Baur +26 more
core +3 more sources
Astrophysical haloscopes [PDF]
Physical Review D, 2017 9 revtex pages, comments ...
openaire +2 more sources
AutoCal: A software application for calibrating photometric data
South African Journal of Science, 2016 We present a software application for the calibration of stellar magnitudes in the absence of standard stars. It uses an existing algorithm to match stars in the target’s field of view to catalogue entries and computes the average offset between the two ...
Daniël J. Wium, Brian van Soelen
doaj +1 more source
ASTROPHYSICS OF WORMHOLES [PDF]
International Journal of Modern Physics D, 2007 We consider the hypothesis that some active galactic nuclei and other compact astrophysical objects may be current or former entrances to wormholes (WHs). A broad mass spectrum for astrophysical WHs is possible. We consider various new models of the static WHs including WHs maintained mainly by an electromagnetic field.
Kardashev, N. S. +2 more
openaire +2 more sources
Towards the first plasma-electron screening experiment
Frontiers in Physics, 2023 The enhancement of fusion reaction rates in a thermonuclear plasma by electron screening of the Coulomb barrier is an important plasma-nuclear effect that is present in stellar models but has not been experimentally observed.
Daniel T. Casey +11 more
doaj +1 more source
Asteroseismology across the HR diagram [PDF]
, 2007 High precision spectroscopy provides essential information necessary to fully exploit the opportunity of probing the internal structure of stars using Asteroseismology.
A. Mazumdar +15 more
core +2 more sources