Results 51 to 60 of about 371,767 (221)
Stellar Physics and General Relativity
Astronomische Nachrichten, EarlyView.ABSTRACT The general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
wiley +1 more source
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, EarlyView.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
, 2008 S.Co.P.E. is one of the four projects funded by the Italian Government in order to provide Southern Italy with a distributed computing infrastructure for fundamental science. Beside being aimed at building the infrastructure, S.Co.P.E. is also actively pursuing research in several areas among which astrophysics and observational cosmology.
Brescia, M. +7 more
openaire +3 more sources
Simple scaling laws for astrophysical jets [PDF]
arXiv, 2006 The idea of a unified model for all astrophysical jets has been considered for quite some time. We present here a few scaling laws relevant to all type of astrophysical jets, analogous to those of \citet{sams96} which are widely used for astrophysical black holes.
arxiv
A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm
Astronomische Nachrichten, EarlyView.ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber +3 more
wiley +1 more source
arXiv, 2009 I discuss the scientific rationale and opportunities in the study of high energy particle accelerators away from the Earth; mostly, those outside the Solar System. I also briefly outline the features to be desired in telescopes used to probe accelerators studied by remote sensing.
arxiv
The Career Development Quarterly, EarlyView.Abstract This study investigated how avoidance motivation, which entails a fear of failure and focus on avoiding negative outcomes, influences adolescents’ aspirations toward scientific research careers. Participants consisted of 245 high school students participating in a summer science enrichment program. Results of a hierarchical regression analysis
Eric D. Deemer +3 more
wiley +1 more source
Problems in Astrophysics [PDF]
Nature, 1903 THE triple alliance of astronomy, physics and chemistry has extended the boundaries of each in unexpected directions. Astronomy is no longer a dependency of mathematics, but an independent power having a high place in the hierarchy of the physical sciences; instruments of research in physics have been turned from earth to sky, and chemistry now looks ...
openaire +3 more sources
Prediction of nuclear reaction rates for astrophysics [PDF]
Proc. IX workshop "Nuclear Astrophysics", eds. W. Hillebrandt, E.
Mueller (MPA/P10, Garching 1998), p. 84, 2000 This is an overview over the prediction of astrophysical reaction rates in the statistical model, with special emphasis on the parametrization of optical alpha+nucleus potentials.
arxiv
Conflict Resolution Quarterly, EarlyView.ABSTRACT Building on Walter Isard's location and gravity theories in economics, we extend his trade model to better understand its core principles, including commercial attraction, center of gravity in markets, and favorable location for exporting firms.
Luigi Capoani +2 more
wiley +1 more source