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Current and future optical and near-infrared wide-field surveys have the potential of finding kilonovae, the optical and infrared counterparts to neutron star mergers, independently of gravitational-wave or high-energy gamma-ray burst…

We analyse the tidal disruption probability of potential neutron star--black hole (NSBH) merger gravitational wave (GW) events, including GW190426_152155, GW190814, GW200105_162426 and GW200115_042309, detected during the third observing…

High Energy Astrophysical Phenomena · Physics 2021-11-12 Jin-Ping Zhu , Shichao Wu , Yuan-Pei Yang , Bing Zhang , Yun-Wei Yu , He Gao , Zhoujian Cao , Liang-Duan Liu

Type Ia supernovae (SNe Ia) were instrumental in establishing the acceleration of the universe's expansion. By virtue of their combination of distance reach, precision, and prevalence, they continue to provide key cosmological constraints,…

Many astronomical surveys prompt follow-up observations, but the decision process through which candidates are selected for follow-up can be difficult to model. This poses a challenge when inferring properties of the intrinsic population of…

Instrumentation and Methods for Astrophysics · Physics 2026-05-08 Reed Essick , Amanda M. Farah

We present a comprehensive, configurable open-source framework for estimating the rate of electromagnetic detection of kilonovae (KNe) associated with gravitational wave detections of binary neutron star (BNS) mergers. We simulate the…

High Energy Astrophysical Phenomena · Physics 2023-11-30 Ved G. Shah , Gautham Narayan , Haille M. L. Perkins , Ryan J. Foley , Deep Chatterjee , Bryce Cousins , Phillip Macias

While recent supernova cosmology research has benefited from improved measurements, current analysis approaches are not statistically optimal and will prove insufficient for future surveys. This paper discusses the limitations of current…

We present a rapid analytic framework for predicting kilonova light curves following neutron star (NS) mergers, where the main input parameters are binary-based properties measurable by gravitational wave detectors (chirp mass and mass…

High Energy Astrophysical Phenomena · Physics 2021-07-07 Matt Nicholl , Ben Margalit , Patricia Schmidt , Graham P. Smith , Evan J. Ridley , James Nuttall

Measurements of the dark energy equation-of-state parameter, $w$, have been limited by uncertainty in the selection effects and photometric calibration of $z<0.1$ Type Ia supernovae (SNe Ia). The Foundation Supernova Survey is designed to…

The detection of GW170817 is revolutionizing many areas of astrophysics with the joint observation of gravitational waves and electromagnetic emissions. These multi-messenger events provide a new approach to determine the Hubble constant,…

Follow-up of gravitational-wave events by wide-field surveys is a crucial tool for the discovery of electromagnetic counterparts to gravitational wave sources, such as kilonovae. Machine learning tools can play an important role in aiding…

With the forth observing run of the LIGO-Virgo-KAGRA gravitational-wave network, which enabled the discovery of the kilonova (KN) counterpart to GW170817, ending with no new confirmed neutron star mergers, the intrinsic rate of these events…

High Energy Astrophysical Phenomena · Physics 2026-02-17 Haille M. L. Perkins , Gautham Narayan , Brian D. Fields , Ved G. Shah , Genevieve Schroeder

In the new era of gravitational wave (GW) and multi-messenger astrophysics, the detection of a GW signal from the coalescence of a black hole - neutron star (BHNS) binary remains a highly anticipated discovery. This kind of system is…

High Energy Astrophysical Phenomena · Physics 2019-06-05 C. Barbieri , O. S. Salafia , A. Perego , M. Colpi , G. Ghirlanda

Gamma-Ray Burst (GRB) prompt and afterglow emission, as well as a kilonova (KN), are the expected electromagnetic (EM) counterparts of Binary Neutron Star (BNS) and Neutron Star -- Black Hole (NSBH) mergers. We aim to infer the KN ejecta…

High Energy Astrophysical Phenomena · Physics 2025-12-30 P. Singh , G. Stratta , A. Rossi , P. T. H. Pang , M. Bulla , F. Ragosta , A. De Rosa , D. A. Kann , F. Cogato

We study the clustering of Gravitational Wave (GW) merger events and Supernovae IA (SN), as cosmic tracers in Luminosity Distance Space. We modify the publicly available CAMB code to numerically evaluate auto- and cross- power spectra for…

Gravitational waves (GWs) propagating through the universe can be microlensed by stellar and intermediate-mass objects. Lensing induces frequency-dependent amplification of GWs, which can be computed using \texttt{GLoW}, an accurate code…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-12 Marienza Caldarola , Srashti Goyal , Nihar Gupte , Stephen R. Green , Miguel Zumalacárregui

Direct detection of gravitational waves (GW) on Aug. 17, 2017, propagating from a binary neutron star merger, opened the era of multimessenger astronomy. The ejected material from neutron star mergers, or kilonova, is a good candidate for…

Solar and Stellar Astrophysics · Physics 2022-07-07 Z. S. Taghadomi , Y. Wan , A. Flowers , P. C. Stancil , B. M. McLaughlin , S. Bromley , J. P. Marler , C. E. Sosolik , S. Loch

Coalescences of binary neutron stars and/or black holes are amongst the most likely gravitational-wave signals to be observed in ground based interferometric detectors. Apart from the astrophysical importance of their detection, they will…

General Relativity and Quantum Cosmology · Physics 2012-05-07 T. G. F. Li , W. Del Pozzo , S. Vitale , C. Van Den Broeck , M. Agathos , J. Veitch , K. Grover , T. Sidery , R. Sturani , A. Vecchio

We implement the Bayesian inference to retrieve energy spectra of all neutrinos from a galactic core-collapse supernova (CCSN). To achieve high statistics and full sensitivity to all flavours of neutrinos, we adopt a combination of several…

High Energy Physics - Phenomenology · Physics 2023-09-26 Xu-Run Huang , Chuan-Le Sun , Lie-Wen Chen , Jun Gao

We apply neural posterior estimation for fast-and-accurate hierarchical Bayesian inference of gravitational wave populations. We use a normalizing flow to estimate directly the population hyper-parameters from a collection of individual…

General Relativity and Quantum Cosmology · Physics 2024-04-09 Konstantin Leyde , Stephen R. Green , Alexandre Toubiana , Jonathan Gair

The observation of Type Ia supernovae (SNe Ia) plays an essential role in probing the expansion history of the universe. But the possible presence of cosmic opacity can degrade the quality of SNe Ia. The gravitational-wave (GW) standard…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-15 Jun-Jie Wei