Results 251 to 260 of about 547,732 (336)

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

Reply to Root-Bernstein: Increasing complexity allows for the pervasiveness of low-complexity entities and is not anthropocentric. [PDF]

Proc Natl Acad Sci U S A
Wong ML, Bartlett S, Cleland CE, Demarest H, Cleaves HJ, Prabhu A, Lunine JI, Hazen RM.   +7 more
europepmc   +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, Elena Bratkovskaya, Taesoo Song, Laura Sagunski   +3 more
wiley   +1 more source

Compact stars with non-uniform relativistic polytrope. [PDF]

Sci Rep
Nouh MI, Foda MM, Aboueisha MS.
europepmc   +1 more source

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, Maximilian Halenke, Aakash Bhat, Veronika Schaffenroth   +3 more
wiley   +1 more source

Proceedings of the annual meeting of the French Society of Astronomy & Astrophysics

, 2023
Mamadou N’Diaye, A. Siebert, N. Lagarde, Olivia Vénot, Kévin Baillié, M. Béthermin, E. Lagadec, J. Malzac, Johan Richard   +8 more
openalex   +1 more source

Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter

Astronomische Nachrichten, EarlyView.
ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley   +1 more source

Black holes regulate cool gas accretion in massive galaxies. [PDF]

Nature
Wang T, Xu K, Wu Y, Shi Y, Elbaz D, Ho LC, Zhang ZY, Gu Q, Wang Y, Shu C, Yuan F, Xia X, Wang K.   +12 more
europepmc   +1 more source

Proceedings of the annual meeting of the French Society of Astronomy & Astrophysics

, 2023
Mamadou N’Diaye, A. Siebert, N. Lagarde, Olivia Vénot, Kévin Baillié, M. Béthermin, E. Lagadec, J. Malzac, Richard Johan   +8 more
openalex   +1 more source

Gaia Search for Stellar Companions of TESS Objects of Interest V

Astronomische Nachrichten, EarlyView.
ABSTRACT In this paper, we present the latest results of our ongoing multiplicity survey of (Community) TESS Objects of Interest, using astrometry and photometry from the latest data release of the ESA Gaia mission to detect stellar companions of these stars and to characterize their properties.
Markus Mugrauer, Ann‐Kathrin Kollak, Lara Pietsch, Kai‐Uwe Michel   +3 more
wiley   +1 more source