Zobrazeno 1 - 10
of 240
pro vyhledávání: '"Vicky Kalogera"'
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 168 (2024)
We use an analytic framework to calculate the evolution of binary orbits under a physically motivated model that accounts for angular momentum loss associated with winds from an accretion disk around the compact-objected accretor. Our prescription co
Externí odkaz:
https://doaj.org/article/e90891067c8e46b484eb91f4985a8770
Autor:
Kyle Akira Rocha, Vicky Kalogera, Zoheyr Doctor, Jeff J. Andrews, Meng Sun, Seth Gossage, Simone S. Bavera, Tassos Fragos, Konstantinos Kovlakas, Matthias U. Kruckow, Devina Misra, Philipp M. Srivastava, Zepei Xing, Emmanouil Zapartas
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 133 (2024)
Be X-ray binaries (Be-XRBs) are one of the largest subclasses of high-mass X-ray binaries, comprised of a rapidly rotating Be star and neutron star companion in an eccentric orbit, intermittently accreting material from a decretion disk around the do
Externí odkaz:
https://doaj.org/article/0a9ab7ec6d0a4a618244f27c1af98b3a
Wind Roche-lobe Overflow in Low-mass Binaries: Exploring the Origin of Rapidly Rotating Blue Lurkers
Autor:
Meng Sun, Sasha Levina, Seth Gossage, Vicky Kalogera, Emily M. Leiner, Aaron M. Geller, Zoheyr Doctor
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 1, p 8 (2024)
Wind Roche-lobe overflow (WRLOF) is a mass-transfer mechanism proposed by Mohamed and Podsiadlowski for stellar binaries wherein the wind acceleration zone of the donor star exceeds its Roche-lobe radius, allowing stellar wind material to be transfer
Externí odkaz:
https://doaj.org/article/73ef1bd9e7db43a78bad7ec9289dcb4c
Autor:
Chase Kimball, Sam Imperato, Vicky Kalogera, Kyle A. Rocha, Zoheyr Doctor, Jeff J. Andrews, Aaron Dotter, Emmanouil Zapartas, Simone S. Bavera, Konstantinos Kovlakas, Tassos Fragos, Philipp M. Srivastava, Devina Misra, Meng Sun, Zepei Xing
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 2, p L34 (2023)
When a compact object is formed in a binary, any mass lost during core collapse will impart a kick on the binary’s center of mass. Asymmetries in this mass loss or neutrino emission would impart an additional natal kick on the remnant black hole or
Externí odkaz:
https://doaj.org/article/c4c6356cdf1d48c5b0b09f2012be8515
Autor:
Ore Gottlieb, Hiroki Nagakura, Alexander Tchekhovskoy, Priyamvada Natarajan, Enrico Ramirez-Ruiz, Sharan Banagiri, Jonatan Jacquemin-Ide, Nick Kaaz, Vicky Kalogera
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 2, p L30 (2023)
Upcoming LIGO–Virgo–KAGRA (LVK) observing runs are expected to detect a variety of inspiralling gravitational-wave (GW) events that come from black hole and neutron star binary mergers. Detection of noninspiral GW sources is also anticipated. We
Externí odkaz:
https://doaj.org/article/64685045a6434f6a9094a4f3188784cf
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 106 (2023)
In recent years, a handful of “dark” binaries have been discovered with a nonluminous compact object. Astrometry and radial velocity measurements of the bright companion allow us to measure the post-supernova orbital elements of such a binary. In
Externí odkaz:
https://doaj.org/article/ea8f3f5e70644feea9a0611d7a8e7bbc
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 133 (2023)
The formation histories of compact binary mergers, especially stellar-mass binary black hole mergers, have recently come under increased scrutiny and revision. We revisit the question of the dominant formation channel and efficiency of forming binary
Externí odkaz:
https://doaj.org/article/405d838cc1e24df8a5682f3b73584aee
Autor:
Jared C. Siegel, Ilia Kiato, Vicky Kalogera, Christopher P. L. Berry, Thomas J. Maccarone, Katelyn Breivik, Jeff J. Andrews, Simone S. Bavera, Aaron Dotter, Tassos Fragos, Konstantinos Kovlakas, Devina Misra, Kyle A. Rocha, Philipp M. Srivastava, Meng Sun, Zepei Xing, Emmanouil Zapartas
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 212 (2023)
Mass measurements from low-mass black hole X-ray binaries (LMXBs) and radio pulsars have been used to identify a gap between the most massive neutron stars (NSs) and the least massive black holes (BHs). BH mass measurements in LMXBs are typically onl
Externí odkaz:
https://doaj.org/article/af9c2a798a2244bcbab62c6c7fedf54b
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 23 (2023)
With the growing number of binary black hole (BBH) mergers detected by LIGO/Virgo/KAGRA, several systems have become difficult to explain via isolated binary evolution, having components in the pair-instability mass gap, high orbital eccentricities,
Externí odkaz:
https://doaj.org/article/4dafd03a5bd64f1dbce75347d5714592
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 152 (2023)
In their most recent observing run, the LIGO-Virgo-KAGRA Collaboration observed gravitational waves from compact binary mergers with highly asymmetric mass ratios, including both binary black holes (BBHs) and neutron star-black holes (NSBHs). It appe
Externí odkaz:
https://doaj.org/article/c153f9ec357a474ab3648df50b8bb0f6