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Irregularly Sampled Time Series Interpolation for Binary Evolution Simulations Using Dynamic Time Warping
Ugur Demir, Philipp M. Srivastava, Aggelos Katsaggelos +9
Binary stellar evolution simulations are computationally expensive. Stellar population synthesis relies on these detailed evolution models at a fundamental level. Producing thousan…
Learning the Stellar Structure Equations via Self-supervised Physics-Informed Neural Networks
Manuel Ballester, Santiago Lopez-Tapia, Seth Gossage +9
Stellar astrophysics relies critically on accurate descriptions of the physical conditions inside stars. Traditional solvers such as \texttt{MESA} (Modules for Experiments in Stell…
Tides in Massive Binaries: Numerical Solutions and Semi-Analytical Comparisons
Meng Sun, Hongbo Xia, Seth Gossage +5
We present a systematic comparison between the tidal secular evolution timescales predicted by the direct numerical method and those given by the commonly used semi-analytic prescr…
Evolutionary Links: From Gaia Neutron Star Binaries to Pulsar White Dwarf Endpoints
Debatri Chattopadhyay, Kyle A. Rocha, Seth Gossage +1
The discovery of wide, eccentric Gaia neutron stars (NSs) in binaries with still evolving (likely main sequence) companions offers a new probe of mass transfer and pulsar recycling…
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,…
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…
Wind Roche-lobe Overflow in Low-Mass Binaries: Exploring the Origin of Rapidly Rotating Blue Lurkers
Meng Sun, Sasha Levina, Seth Gossage +4
Wind Roche-Lobe Overflow (WRLOF) is a mass-transfer mechanism proposed by Mohamed and Podsiadlowski (2007) for stellar binaries wherein the wind acceleration zone of the donor star…
Magnetic braking with MESA evolutionary models in the single star and LMXB regimes
Seth Gossage, Vicky Kalogera, Meng Sun
Magnetic braking has a prominent role in driving the evolution of close low mass binary systems and heavily influences the rotation rates of low mass F- and later type stars with c…
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…
The role of mass transfer and common envelope evolution in the formation of merging binary black holes
Pablo Marchant, Kaliroë M. W. Pappas, Monica Gallegos-Garcia +4
As the number of observed merging binary black holes (BHs) grows, accurate models are required to disentangle multiple formation channels. In models with isolated binaries, importa…
Orbital evolution of mass-transferring eccentric binary systems. II. Secular Evolution
Fani Dosopoulou, Vicky Kalogera
Finite eccentricities in mass-transferring eccentric binary systems can be explained by taking into account mass-loss and mass-transfer processes that often occur in these systems.…
Orbital evolution of mass-transferring eccentric binary systems. I. Phase-dependent evolution
Fani Dosopoulou, Vicky Kalogera
Observations reveal that mass-transferring binary systems may have non-zero orbital eccentricities. The time-evolution of the orbital semi-major axis and eccentricity of mass-trans…
Stability and Coalescence of Massive Twin Binaries
Jason A. Hwang, James C. Lombardi, Frederic A. Rasio +1
Massive stars are usually found in binaries, and binaries with periods less than 10 days may have a preference for near equal component masses. In this paper we investigate the evo…
Evolutionary Channels for the Formation of Double Neutron Stars
Jeff J. Andrews, Will M. Farr, Vicky Kalogera +1
We analyze binary population models of double-neutron stars and compare results to the accurately measured orbital periods and eccentricities of the eight known such systems in our…
Towards Synchronism Through Dynamic Tides in J0651: the "Antiresonance" Locking
Francesca Valsecchi, Will. M. Farr, Bart Willems +1
In recent years, the Extremely Low Mass White Dwarf (ELM WD) survey has quintupled the number of known close, detached double WD binaries (DWD). The tightest such DWD, SDSS J065133…
Constraining White Dwarf Masses Via Apsidal Precession in Eccentric Double White Dwarf Binaries
Francesca Valsecchi, Will M. Farr, Bart Willems +1
Galactic short period double white dwarfs (DWD) are guaranteed gravitational wave (GW) sources for the next generation of space-based interferometers sensitive to low-frequency GWs…
Compact Remnant Mass Function: Dependence on the Explosion Mechanism and Metallicity
C. L. Fryer, K. Belczynski, G. Wiktorowicz +3
The mass distribution of neutron stars and stellar-mass black holes provides vital clues into the nature of stellar core collapse and the physical engine responsible for supernova…
Angular Momentum Changes Due to Direct Impact Accretion in a Simplified Binary System
Jeremy F. Sepinsky, Bart Willems, Vassiliki Kalogera +1
We model a circular mass-transferring binary system to calculate the exchange of angular momentum between stellar spins and the orbit due to direct impact of the mass transfer stre…
The Eclipsing Black Hole X-ray Binary M33 X-7: Understanding the Current Properties
Francesca Valsecchi, Bart Willems, Tassos Fragos +1
We explore the formation and evolution of the black hole X-ray binary system M33 X-7. In particular, we examine whether accounting for systematic errors in the stellar parameters i…
The astrophysics of ultra-compact binaries
G. Nelemans, M. Wood, P. Groot +24
This white paper briefly describes the astrophysics of ultra-compact binaries, with emphasis of the challenges and opportunities in the next decade.