156 citations · 980 across the 38 of their papers we have counts for
38 papers
Constructing X-ray Spectral Models of Galaxies: Varying Contributions from X-ray Binary Populations with Host Galaxy Properties
Emerson Gehr, Bret D. Lehmer, Antara R. Basu-Zych +7
Recent work has shown that the emission from X-ray binary (XRB) populations in galaxies varies with stellar mass (), star formation rate (SFR), and metallicity (). Such…
Forming Double Neutron Stars using Detailed Binary Evolution Models with POSYDON: Comparison to the Galactic Systems
Abhishek Chattaraj, Jeff J. Andrews, Simone S. Bavera +14
With over two dozen detections in the Milky Way, double neutron stars (DNSs) provide a unique window into massive binary evolution. We use the POSYDON binary population synthesis c…
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…
Populations of Neutron Star Ultraluminous X-ray Sources: Mind your b's and B's
Konstantinos Kovlakas, Devina Misra, Roberta Amato +1
Ultraluminous X-ray sources (ULXs) with neutron star (NS) accretors challenge traditional accretion models, and have sparked a debate regarding the role of geometrical beaming and…
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 Transfer in Eccentric Orbits with Self-consistent Stellar Evolution
Kyle Akira Rocha, Rachel Hur, Vicky Kalogera +12
We investigate Roche lobe overflow mass transfer (MT) in eccentric binary systems between stars and compact objects (COs), modeling the coupled evolution of both the star and the o…
Irregularly Sampled Time Series Interpolation for Detailed Binary Evolution Simulations
Philipp M. Srivastava, Ugur Demir, Aggelos Katsaggelos +14
Modeling of large populations of binary stellar systems is an intergral part of a many areas of astrophysics, from radio pulsars and supernovae to X-ray binaries, gamma-ray bursts,…
POSYDON Version 2: Population Synthesis with Detailed Binary-Evolution Simulations across a Cosmological Range of Metallicities
Jeff J. Andrews, Simone S. Bavera, Max Briel +21
Whether considering rare astrophysical events on cosmological scales or unresolved stellar populations, accurate models must account for the integrated contribution from the entire…
An Empirical Framework Characterizing the Metallicity and Star-Formation History Dependence of X-ray Binary Population Formation and Emission in Galaxies
Bret D. Lehmer, Erik B. Monson, Rafael T. Eufrasio +12
We present a new empirical framework modeling the metallicity and star-formation history (SFH) dependence of X-ray luminous ( ergs s) point-source population lu…
The Formation of Black Holes in Non-interacting, Isolated Binaries. Gaia Black Holes as Calibrators of Stellar Winds From Massive Stars
Matthias U. Kruckow, Jeff J. Andrews, Tassos Fragos +10
Context. The black holes discovered using Gaia, especially Gaia BH1 and BH2, have low mass companions of solar-like metallicity in wide orbits. For standard isolated binary evoluti…
The effect of mass loss in models of red supergiants in the Small Magellanic Cloud
E. Zapartas, S. de Wit, K. Antoniadis +16
The rate and mechanism of mass loss of red supergiants (RSGs) remain poorly understood, especially at low metallicities. Motivated by the new empirical prescription by Yang et al.…
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…
Emulators for stellar profiles in binary population modeling
Elizabeth Teng, Ugur Demir, Zoheyr Doctor +14
Knowledge about the internal physical structure of stars is crucial to understanding their evolution. The novel binary population synthesis code POSYDON includes a module for inter…
Ultraluminous X-Ray Binaries
Kristen C. Dage, Konstantinos Kovlakas
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…
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…
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…
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 ionizing and heating power of ultraluminous X-ray sources under the geometrical beaming model
K. Kovlakas, T. Fragos, D. Schaerer +1
While there is now a consensus that X-ray binaries (XRBs) are the dominant X-ray sources in the early Universe and play a significant role during the epoch of heating of the interg…
Active Learning for Computationally Efficient Distribution of Binary Evolution Simulations
Kyle Akira Rocha, Jeff J. Andrews, Christopher P. L. Berry +13
Binary stars undergo a variety of interactions and evolutionary phases, critical for predicting and explaining observed properties. Binary population synthesis with full stellar-st…
POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations
Tassos Fragos, Jeff J. Andrews, Simone S. Bavera +22
Most massive stars are members of a binary or a higher-order stellar systems, where the presence of a binary companion can decisively alter their evolution via binary interactions.…