Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Kovlakas, Konstantinos"'
Ultraluminous X-ray binaries have challenged our assumptions of extreme accretion rates in X-ray binaries, and impact other subfields of astronomy, such as cosmology, gravitational wave sources and supernov{\ae}. Our understanding of ULXs has changed
Externí odkaz:
http://arxiv.org/abs/2407.01768
Autor:
Xing, Zepei, Fragos, Tassos, Zapartas, Emmanouil, Kwan, Tom M., Dai, Lixin, Mandel, Ilya, Kruckow, Matthias U., Briel, Max, Andrews, Jeff J., Bavera, Simone S., Gossage, Seth, Kovlakas, Konstantinos, Rocha, Kyle A., Sun, Meng, Srivastava, Philipp M.
The three dynamically confirmed wind-fed black hole high-mass X-ray binaries (BH-HMXBs) are suggested to all contain a highly spinning black hole (BH). However, based on the theories of efficient angular momentum transport inside the stars, we expect
Externí odkaz:
http://arxiv.org/abs/2407.00200
Autor:
Marino, Alessio, Dehman, Clara, Kovlakas, Konstantinos, Rea, Nanda, Pons, Jose A., Viganò, D.
Neutron stars are the dense and highly magnetic relics of supernova explosions of massive stars. The quest to constrain the Equation of State (EoS) of ultra-dense matter and thereby probe the behavior of matter inside neutron stars, is one of the cor
Externí odkaz:
http://arxiv.org/abs/2404.05371
Autor:
Rocha, Kyle Akira, Kalogera, Vicky, Doctor, Zoheyr, Andrews, Jeff J., Sun, Meng, Gossage, Seth, Bavera, Simone S., Fragos, Tassos, Kovlakas, Konstantinos, Kruckow, Matthias U., Misra, Devina, Srivastava, Philipp M., Xing, Zepei, Zapartas, Emmanouil
Be X-ray binaries (Be-XRBs) are crucial in understanding high-mass X-ray binaries, featuring a rapidly rotating Be star and a neutron star companion in an eccentric orbit, intermittently accreting material from the Be star's decretion disk. Originati
Externí odkaz:
http://arxiv.org/abs/2403.07172
Autor:
Misra, Devina, Kovlakas, Konstantinos, Fragos, Tassos, Andrews, Jeff J., Bavera, Simone S., Zapartas, Emmanouil, Xing, Zepei, Dotter, Aaron, Rocha, Kyle Akira, Srivastava, Philipp M., Sun, Meng
Publikováno v:
A&A 682, A69 (2024)
Ultra-luminous X-ray sources (ULXs) are sources observed to exceed the Eddington limit of a stellar-mass black hole (BH). A fraction of ULX sources show X-ray pulses which are evidence for accreting neutron stars (NSs). Theoretical studies have sugge
Externí odkaz:
http://arxiv.org/abs/2309.15904
Autor:
Xing, Zepei, Bavera, Simone S., Fragos, Tassos, Kruckow, Matthias U., Román-Garza, Jaim, Andrews, Jeff J., Dotter, Aaron, Kovlakas, Konstantinos, Misra, Devina, Srivastava, Philipp M., Rocha, Kyle A., Sun, Meng, Zapartas, Emmanouil
Neutron star $-$ black hole (NSBH) merger events bring us new opportunities to constrain theories of stellar and binary evolution, and understand the nature of compact objects. In this work, we investigate the formation of merging NSBH binaries at so
Externí odkaz:
http://arxiv.org/abs/2309.09600
Autor:
Bavera, Simone S., Fragos, Tassos, Zapartas, Emmanouil, Andrews, Jeff J., Kalogera, Vicky, Berry, Christopher P. L., Kruckow, Matthias, Dotter, Aaron, Kovlakas, Konstantinos, Misra, Devina, Rocha, Kyle A., Srivastava, Philipp M., Sun, Meng, Xing, Zepei
The maximum mass of black holes formed in isolated binaries is determined by stellar winds and the interactions between the binary components. We consider for the first time fully self-consistent detailed stellar structure and binary evolution calcul
Externí odkaz:
http://arxiv.org/abs/2212.10924
Autor:
Kimball, Chase, Imperato, Sam, Kalogera, Vicky, Rocha, Kyle A., Doctor, Zoheyr, Andrews, Jeff J., Dotter, Aaron, Zapartas, Emmanouil, Bavera, Simone S., Kovlakas, Konstantinos, Fragos, Tassos, Srivastava, Phillip M., Misra, Devina, Sun, Meng, Xing, Zepei
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 n
Externí odkaz:
http://arxiv.org/abs/2211.02158
Autor:
Siegel, Jared C., Kiato, Ilia, Kalogera, Vicky, Berry, Christopher P. L., Maccarone, Thomas J., Breivik, Katelyn, Andrews, Jeff J., Bavera, Simone S., Dotter, Aaron, Fragos, Tassos, Kovlakas, Konstantinos, Misra, Devina, Rocha, Kyle A., Srivastava, Philipp M., Sun, Meng, Xing, Zepei, Zapartas, Emmanouil
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:
http://arxiv.org/abs/2209.06844
Autor:
Misra, Devina, Kovlakas, Konstantinos, Fragos, Tassos, Lazzarini, Margaret, Bavera, Simone S., Lehmer, Bret D., Zezas, Andreas, Zapartas, Emmanouil, Xing, Zepei, Andrews, Jeff J., Dotter, Aaron, Rocha, Kyle A., Srivastava, Philipp M., Sun, Meng
Publikováno v:
A&A 672, A99 (2023)
The ever-expanding observational sample of X-ray binaries (XRBs) makes them excellent laboratories for constraining binary evolution theory. Such constraints can be obtained by studying the effects of various physical assumptions on synthetic X-ray l
Externí odkaz:
http://arxiv.org/abs/2209.05505