315 citations · 1.3k across the 31 of their papers we have counts for
21 papers · 1 filter
A new long gamma-ray burst formation pathway at solar metallicity
M. M. Briel, T. Fragos, O. S. Salafia +11
Context. Long gamma-ray bursts (LGRBs) are generally observed in low-metallicity environments. However, 10 to 20 per cent of LGRBs at redshift are associated with near-solar…
Challenges in Forming Millisecond Pulsar-Black Holes from Isolated Binaries
Camille Liotine, Vicky Kalogera, Jeff J. Andrews +12
Binaries harboring a millisecond pulsar (MSP) and a black hole (BH) are a key observing target for current and upcoming pulsar surveys. We model the formation and evolution of such…
Mass-gap Black Holes in Coalescing Neutron Star Black Hole Binaries
Zepei Xing, Vicky Kalogera, Tassos Fragos +10
The existence of a mass gap of between the heaviest neutron stars (NSs) and the lightest black holes (BHs), inferred from the BH mass distribution in low mass X-ra…
Formation of Wind-Fed Black Hole High-mass X-ray Binaries: The Role of Roche-lobe-Overflow Post Black-Hole Formation
Zepei Xing, Tassos Fragos, Emmanouil Zapartas +12
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 theori…
Detecting the Undetected: Overcoming Biases in Gravitational-Wave Population Studies
Ryan Raikman, Simone Bavera, Tassos Fragos
In the flourishing field of gravitational-wave astronomy, accurately inferring binary black hole merger formation channels is paramount. The Bayesian hierarchical model selection a…
From ZAMS to Merger: Detailed Binary Evolution Models of Coalescing Neutron Star-Black Hole Systems at Solar Metallicity
Zepei Xing, Simone S. Bavera, Tassos Fragos +10
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…
Exploring the nature of ultra-luminous X-ray sources across stellar population ages using detailed binary evolution calculations
Devina Misra, Konstantinos Kovlakas, Tassos Fragos +8
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 evid…
Searching for candidates of coalescing binary black holes formed through chemically homogeneous evolution in GWTC-3
Ying Qin, Yuan-Zhu Wang, Simone S. Bavera +10
The LIGO, Virgo, and KAGRA (LVK) collaboration has announced 90 coalescing binary black holes (BBHs) with to date, however, the origin of their formation cha…
The formation of merging black holes at solar metallicity
Simone S. Bavera, Tassos Fragos, Emmanouil Zapartas +11
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…
A Black Hole Kicked At Birth: MAXI J1305-704
Chase Kimball, Sam Imperato, Vicky Kalogera +12
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 emissio…
Investigating the Lower Mass Gap with Low Mass X-ray Binary Population Synthesis
Jared C. Siegel, Ilia Kiato, Vicky Kalogera +14
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 mass…
X-ray luminosity function of high-mass X-ray binaries: Studying the signatures of different physical processes using detailed binary evolution calculations
Devina Misra, Konstantinos Kovlakas, Tassos Fragos +11
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 stu…
The correlation of field binary black hole mergers and how 3G gravitational-wave detectors can constrain it
Simone S. Bavera, Maya Fishbach, Michael Zevin +2
Understanding the origin of merging binary black holes is currently one of the most pressing quests in astrophysics. We show that if isolated binary evolution dominates the formati…
Suspicious Siblings: The Distribution of Mass and Spin Across Component Black Holes in Isolated Binary Evolution
Michael Zevin, Simone S. Bavera
The LIGO and Virgo gravitational-wave detectors have uncovered binary black hole systems with definitively nonzero spins, as well as systems with significant spin residing in the m…
Probing the progenitors of spinning binary black-hole mergers with long gamma-ray bursts
Simone S. Bavera, Tassos Fragos, Emmanouil Zapartas +15
Long-duration gamma-ray bursts are thought to be associated with the core-collapse of massive, rapidly spinning stars and the formation of black holes. However, efficient angular m…
Revisiting the explodability of single massive star progenitors of stripped-envelope supernovae
E. Zapartas, M. Renzo, T. Fragos +12
Stripped-envelope supernovae (Types IIb, Ib, and Ic) that show little or no hydrogen comprise roughly one-third of the observed explosions of massive stars. Their origin and the ev…
Approximations to the spin of close Black-hole-Wolf-Rayet binaries
Simone S. Bavera, Michael Zevin, Tassos Fragos
Population synthesis studies of binary black-hole mergers often lack robust black-hole spin estimates as they cannot accurately follow tidal spin-up during the late black-hole-Wolf…
The role of core-collapse physics in the observability of black-hole neutron-star mergers as multi-messenger sources
Jaime Román-Garza, Simone S. Bavera, Tassos Fragos +10
Recent detailed 1D core-collapse simulations have brought new insights on the final fate of massive stars, which are in contrast to commonly used parametric prescriptions. In this…
One Channel to Rule Them All? Constraining the Origins of Binary Black Holes using Multiple Formation Pathways
Michael Zevin, Simone S. Bavera, Christopher P. L. Berry +7
The second LIGO-Virgo catalog of gravitational wave transients has more than quadrupled the observational sample of binary black holes. We analyze this catalog using a suite of fiv…
The impact of mass-transfer physics on the observable properties of field binary black hole populations
Simone S. Bavera, Tassos Fragos, Michael Zevin +13
We study the impact of mass-transfer physics on the observable properties of binary black hole populations formed through isolated binary evolution. We investigate the impact of ma…
The origin of spin in binary black holes: Predicting the distributions of the main observables of Advanced LIGO
Simone S. Bavera, Tassos Fragos, Ying Qin +7
We study the formation of coalescing binary black holes via the evolution of isolated field binaries that go through the common envelope phase in order to obtain the combined distr…