Evidence for a compact object in the aftermath of the extragalactic transient AT2018cow
Sign Up to like & getrecommendations! Published in 2021 at "Nature Astronomy"
DOI: 10.1038/s41550-021-01524-8
Abstract: The brightest fast blue optical transients (FBOTs) are mysterious extragalactic explosions that may represent a new astrophysical phenomenon 1 . Their fast time to maximum brightness of less than a week, decline over several months,… read more here.
Keywords: compact object; quasiperiodic oscillation; evidence; transient at2018cow ... See more keywords
A dusty compact object bridging galaxies and quasars at cosmic dawn.
Sign Up to like & getrecommendations! Published in 2022 at "Nature"
DOI: 10.1038/s41586-022-04454-1
Abstract: Understanding how super-massive black holes form and grow in the early Universe has become a major challenge1,2 since it was discovered that luminous quasars existed only 700 million years after the Big Bang3,4. Simulations indicate… read more here.
Keywords: luminous quasars; compact object; bridging galaxies; dusty compact ... See more keywords
Mergers of equal-mass binaries with compact object companions from mass transfer in triple star systems
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1670
Abstract: In this paper, we consider triple systems composed of main-sequence (MS) stars, and their internal evolution due to stellar and binary evolution. Our focus is on triples that produce white dwarfs (WDs), where Roche lobe… read more here.
Keywords: equal mass; compact object; mass; mass binaries ... See more keywords
How does a dark compact object ringdown?
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.064053
Abstract: A generic feature of nearly out-of-equilibrium dissipative systems is that they resonate through a set of quasinormal modes. Black holes - the absorbing objects par excellence - are no exception. When formed in a merger,… read more here.
Keywords: dark compact; black holes; black hole; compact object ... See more keywords
Charged fluid structures around a rotating compact object with a magnetic dipole field
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.023017
Abstract: We study stationary, electrically charged fluid structures encircling a rotating compact object with a dipole magnetic field oriented along the rotation axis. This situation is described in an idealized way by the Kerr metric and… read more here.
Keywords: magnetic dipole; charged fluid; field; rotating compact ... See more keywords
Weak gravitational lensing: A compact object with arbitrary quadrupole moment immersed in plasma
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.024022
Abstract: We study weak gravitational lensing around a compact object with arbitrary quadrupole moment in the presence of plasma. The studied compact objects are considered to be spherically symmetric. The additional parameter $\epsilon$ regulating the quadrupole… read more here.
Keywords: quadrupole moment; compact object; gravitational lensing; weak gravitational ... See more keywords
Chaotic shadow of a non-Kerr rotating compact object with quadrupole mass moment
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.104040
Abstract: We have studied numerically the shadows of a non-Kerr rotating compact object which belongs to Manko-Novikov family. The non-integrable photon motion caused by quadrupole mass moment affects sharply the shadow of the compact object. As… read more here.
Keywords: mass moment; shadow; compact object; quadrupole mass ... See more keywords
Compact Object Mergers Driven by Gas Fallback.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.120.261101
Abstract: Recently, several gravitational wave detections have shown evidence for compact object mergers. However, the astrophysical origin of merging binaries is not well understood. Stellar binaries are typically at much larger separations than what is needed… read more here.
Keywords: gravitational wave; gas; object mergers; compact object ... See more keywords