Zobrazeno 1 - 10
of 420
pro vyhledávání: '"Gravitational-wave sources"'
Autor:
Jakob Stegmann, Alejandro Vigna-Gómez, Antti Rantala, Tom Wagg, Lorenz Zwick, Mathieu Renzo, Lieke A. C. van Son, Selma E. de Mink, Simon D. M. White
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 2, p L19 (2024)
A substantial fraction of stars can be found in wide binaries with projected separations between ∼10 ^2 and 10 ^5 au. In the standard lore of binary physics, these would evolve as effectively single stars that remotely orbit one another on stationa
Externí odkaz:
https://doaj.org/article/ae1d40135b914cfa9f7c5423ad573e29
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L4 (2024)
We present the first numerical study of gravitational waves (GWs) from collapsar disks, using state-of-the-art 3D general relativistic magnetohydrodynamic simulations of collapsing stars. These simulations incorporate a fixed Kerr metric for the cent
Externí odkaz:
https://doaj.org/article/2d37a7ef95394f999aedbe7807a805b1
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 2, p L34 (2024)
Although stable neutron stars (NSs) can in principle exist down to masses M _ns ≈ 0.1 M _⊙ , standard models of stellar core-collapse predict a robust lower limit M _ns ≳ 1.2 M _⊙ , roughly commensurate with the Chandrasekhar mass M _Ch of th
Externí odkaz:
https://doaj.org/article/becd1313546e43428cc03cb2a129d67c
Autor:
Emily R. Liepold, Chung-Pei Ma
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 2, p L29 (2024)
We construct the z = 0 galaxy stellar mass function (GSMF) by combining the GSMF at stellar masses M _* ≲ 10 ^11.3 M _⊙ from the census study of Leja et al. and the GSMF of massive galaxies at M _* ≳ 10 ^11.5 M _⊙ from the volume-limited MASS
Externí odkaz:
https://doaj.org/article/210275d0b4ee40a79db8e4c9f9eff682
Autor:
Nathan Rutherford, Melissa Mendes, Isak Svensson, Achim Schwenk, Anna L. Watts, Kai Hebeler, Jonas Keller, Chanda Prescod-Weinstein, Devarshi Choudhury, Geert Raaijmakers, Tuomo Salmi, Patrick Timmerman, Serena Vinciguerra, Sebastien Guillot, James M. Lattimer
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L19 (2024)
Pulse profile modeling of X-ray data from the Neutron Star Interior Composition Explorer is now enabling precision inference of neutron star mass and radius. Combined with nuclear physics constraints from chiral effective field theory ( χ EFT), and
Externí odkaz:
https://doaj.org/article/e4e6b5746b5c4e52963bcc4cf4f11114
Autor:
William G. Lamb, Stephen R. Taylor
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 1, p L10 (2024)
A population of compact object binaries emitting gravitational waves that are not individually resolvable will form a stochastic gravitational-wave signal. While the expected spectrum over population realizations is well known from Phinney, its highe
Externí odkaz:
https://doaj.org/article/f535307c9ff3423eaf22d2a713030389
Autor:
Keith Riles
Publikováno v:
Living Reviews in Relativity, Vol 26, Iss 1, Pp 1-154 (2023)
Abstract Now that detection of gravitational-wave signals from the coalescence of extra-galactic compact binary star mergers has become nearly routine, it is intriguing to consider other potential gravitational-wave signatures. Here we examine the pr
Externí odkaz:
https://doaj.org/article/ba4fdf9cb2824b0f8e527118a74e7e59
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 214 (2024)
Joint observations in electromagnetic and gravitational waves shed light on the physics of objects and surrounding environments with extreme gravity that are otherwise unreachable via siloed observations in each messenger. However, such detections re
Externí odkaz:
https://doaj.org/article/bb02687bb6d948578162d411119e6c29
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 86 (2024)
The central engine of a gamma-ray burst (GRB) is widely believed to launch a pair of oppositely moving jets, i.e., the forward jet moving toward us and the counter jet regressing away. The forward jet generates the radiation typically observed in GRB
Externí odkaz:
https://doaj.org/article/37a3f5b246a1434a967a71c9ac588a49
Autor:
Mankeun Jeong, Myungshin Im
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 114 (2024)
In the upcoming gravitational-wave (GW) observing runs, identifying host galaxies is crucial as it provides essential redshift information and enables the use of GW events as standard sirens. However, pinpointing host galaxies remains challenging due
Externí odkaz:
https://doaj.org/article/b04dd41e647644bb9e3acef5c4f71b0d