Exactly solvable gravitating perfect fluid solitons in (2 + 1) dimensions
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)097
Abstract: A bstractThe Bogomolnyi-Prasad-Sommerfield (BPS) baby Skyrme model coupled to gravity is considered. We show that in an asymptotically flat space-time the model still possesses the BPS property, i.e., admits a BPS reduction to first order… read more here.
Keywords: space; flat space; mass radius; space time ... See more keywords
Relevance of the small frequency separation for asteroseismic stellar age, mass, and radius
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201936353
Abstract: We performed a theoretical analysis on the relevance of the small frequency separation $\delta \nu$ in determining stellar ages, masses, and radii. We adopted the SCEPtER pipeline for low-mass stars, [0.7, 1.05] Msun. Synthetic stars… read more here.
Keywords: relevance small; age; mass radius; small frequency ... See more keywords
Complexity-free Vaidya-Tikekar model describing self-bound compact objects by gravitational decoupling
Sign Up to like & getrecommendations! Published in 2023 at "Physica Scripta"
DOI: 10.1088/1402-4896/acd442
Abstract: In this article, using gravitational decoupling under vanishing complexity condition, an anisotropic solution to spherically symmetric compact stars has been investigated. After obtaining the solution, a detailed physical analysis including thermodynamic parameters, mass-radius ratio, and… read more here.
Keywords: gravitational decoupling; complexity free; radius ratio; model ... See more keywords
Relation between Mass and Radius of Exoplanets Distinguished by their Density
Sign Up to like & getrecommendations! Published in 2023 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/accbb1
Abstract: The formation of the solar system has been studied since the 18th century and received a boost in 1995 with the discovery of the first exoplanet, 51 Pegasi b. The investigations increased the number of… read more here.
Keywords: density; mass radius; ice gas; mass ... See more keywords
Accurate mass-radius ratios for Hyades white dwarfs
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1252
Abstract: We use the ESPRESSO spectrograph at the Very Large Telescope to measure velocity shifts and gravitational redshifts of eight bona fide Hyades white dwarfs, with an accuracy better than 1.5 percent. By comparing the gravitational… read more here.
Keywords: radius; white dwarfs; hyades white; radius ratios ... See more keywords
Constraining a relativistic mean field model using neutron star mass-radius measurements II: Hyperonic models
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae2792
Abstract: We investigate whether measurements of the neutron star mass and radius or the tidal deformability can provide information about the presence of hyperons inside a neutron star. This is achieved by considering two inference models,… read more here.
Keywords: neutron star; star mass; mass radius;
Mass-Radius relation for magnetized white dwarfs from SDSS
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae829
Abstract: We present the observational mass-radius (M–R) relation for a sample of 47 magnetized white dwarfs (WDs) with the magnetic field strength (B) ranging from 1 to 773 MG, identified from the SDSS data release 7… read more here.
Keywords: radius relation; radius; mass radius; magnetized white ... See more keywords
Precise mass and radius determination for two new and one known Neptune-sized planets around G Dwarf hosts
Sign Up to like & getrecommendations! Published in 2025 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staf1958
Abstract: As part of the KESPRINT collaboration, we present the discovery and characterization of three exoplanets in the sub-Neptune to super-Neptune regime, spanning key regions of the exo-Neptunian landscape. TOI-1472 c and TOI-1648 b are newly discovered sub-Neptunes,… read more here.
Keywords: toi 1472; toi 1648; mass radius; mass ... See more keywords
The cooling, mass and radius of the neutron star in EXO 0748-676 in quiescence with XMM-Newton
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx1452
Abstract: We analyse four XMM-Newton observations of the neutron-star low-mass X-ray binary EXO 0748-676 in quiescence. We fit the spectra with an absorbed neutron-star atmosphere model, without the need for a high-energy (power-law) component; with a… read more here.
Keywords: neutron star; mass radius; star;
Testing the white dwarf mass-radius relationship with eclipsing binaries
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx1522
Abstract: We present high-precision, model-independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously published data to test the theoretical white dwarf mass–radius relationship. We reach a mean… read more here.
Keywords: white dwarfs; radius; mass radius; per cent ... See more keywords
Modification of the universal relation between mass, radius, and nonradial f -mode oscillation in proto-neutron stars
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review C"
DOI: 10.1103/physrevc.111.055805
Abstract: Neutron stars are usually assumed to be cold; however, in certain dynamical astrophysical scenarios such as newly born neutron stars or binary star mergers, the temperature effects play a non-negligible role. We systematically derive the… read more here.
Keywords: universal relation; neutron stars; mass radius; mass ... See more keywords