359 citations · 2.6k across the 70 of their papers we have counts for
24 papers · 1 filter
A Multi-Mission Detection Framework for High-Energy Transients: Application to a 13-year Fermi/GBM and Swift/BAT Sample
Ariel Perera, Barak Zackay, Tejaswi Venumadhav
The detection of faint high-energy transients is becoming increasingly important in time-domain and multi-messenger astronomy, particularly for identifying electromagnetic counterp…
Coherent Signal Detection with Pruning -- I. Finding Short-Period Binary Pulsars in Circular Orbits
Pravir Kumar, Barak Zackay
Detecting pulsars in short-period binary systems, which are unparalleled laboratories for fundamental physics and tests of general relativity, is a prime objective of radio astrono…
Expanding the Population of Short Gamma-Ray Transients with a Coherent Fermi/GBM Search. A 13-year catalog of short GRBs
Ariel Perera, Barak Zackay, Tejaswi Venumadhav
In this paper, we present an archival search for short gamma-ray bursts (sGRBs) over 13 years (2013-2025) of Fermi/GBM data using a Poisson matched-filter pipeline that performs a…
GW190711_030756 and GW200114_020818: astrophysical interpretation of two asymmetric binary black hole mergers in the IAS catalog
Tousif Islam, Tejaswi Venumadhav, Digvijay Wadekar +6
We provide a comprehensive analysis of GW190711_030756 and GW200114_020818, two of the most significant binary black hole merger candidates in the IAS catalog, with probabilities o…
A New Search Pipeline for Short Gamma Ray Bursts in Fermi/GBM Data -- A 50% Increase in the Number of Detections
Ariel Perera, Barak Zackay, Tejaswi Venumadhav
In this paper, we present the development and the results of a new search pipeline for short gamma-ray bursts (sGRBs) in the publicly available data from the Gamma-Ray Burst Monito…
No Evidence for Second-Scale Periodicity in FRB 20201124A from FAST Observations
Dotan Gazith, Barak Zackay
Fast Radio Bursts (FRBs) are bright and short radio flashes of cosmological origin. Although a great number of FRBs were detected in the last two decades, their progenitors and the…
gwharmone: first data-driven surrogate for eccentric harmonics in binary black hole merger waveforms
Tousif Islam, Tejaswi Venumadhav, Ajit Kumar Mehta +6
We present gwharmone, the first data-driven surrogate model for eccentric harmonics (as well as the full radiation content) of the dominant quadrupolar mode in eccentric, non-spinn…
Recovering pulsar periodicity from time of arrival data by finding the shortest vector in a lattice
Dotan Gazith, Aaron B. Pearlman, Barak Zackay
The strict periodicity of pulsars is the primary source of information we have to learn about their nature and environment, it allows us to challenge general relativity and measure…
A 12.4 day periodicity in a close binary system after a supernova
Ping Chen, Avishay Gal-Yam, Jesper Sollerman +37
Neutron stars and stellar-mass black holes are the remnants of massive star explosions. Most massive stars reside in close binary systems, and the interplay between the companion s…
Detecting Fast Radio Bursts with Spectral Structure using the Continuous Forward Algorithm
Pravir Kumar, Barak Zackay, Casey J. Law
Detecting fast radio bursts (FRBs) with frequency-dependent intensity remains a challenge, as existing search algorithms do not account for the spectral shape, potentially leading…
New binary black hole mergers in the LIGO--Virgo O3a data
Seth Olsen, Tejaswi Venumadhav, Jonathan Mushkin +3
We report the detection of ten new binary black hole (BBH) mergers in the publicly released data from the the first half of the third observing run (O3a) of advanced LIGO and advan…
Mapping the Likelihood of GW190521 with Diverse Mass and Spin Priors
Seth Olsen, Javier Roulet, Horng Sheng Chia +4
We map the likelihood of GW190521, the heaviest detected binary black hole (BBH) merger, by sampling under different mass and spin priors designed to be uninformative. We find that…
Distribution of Effective Spins and Masses of Binary Black Holes from the LIGO and Virgo O1-O3a Observing Runs
Javier Roulet, Horng Sheng Chia, Seth Olsen +4
The distribution of effective spin , a parameter that encodes the degree of spin-orbit alignment in a binary system, has been widely regarded as a robust discriminator…
Signs of Higher Multipoles and Orbital Precession in GW151226
Horng Sheng Chia, Seth Olsen, Javier Roulet +4
We present a reanalysis of GW151226, the second binary black hole merger discovered by the LIGO--Virgo Collaboration. Previous analysis showed that the best-fit waveform for this e…
Binary Black Hole Mergers from LIGO/Virgo O1 and O2: Population Inference Combining Confident and Marginal Events
Javier Roulet, Tejaswi Venumadhav, Barak Zackay +2
We perform a statistical inference of the astrophysical population of binary black hole (BBH) mergers observed during the first two observing runs of Advanced LIGO and Advanced Vir…
Search for Lensed Gravitational Waves Including Morse Phase Information: An Intriguing Candidate in O2
Liang Dai, Barak Zackay, Tejaswi Venumadhav +2
We search for strongly lensed and multiply imaged gravitational wave signals in the second observing run of Advanced LIGO and Advanced Virgo (O2). We exploit a new source of inform…
A Distant Fast Radio Burst Associated to its Host Galaxy with the Very Large Array
C. J. Law, B. J. Butler, J. X. Prochaska +17
We present the discovery and subarcsecond localization of a new Fast Radio Burst with the Karl G. Jansky Very Large Array and realfast search system. The FRB was discovered on 2019…
Detecting Gravitational Waves With Disparate Detector Responses: Two New Binary Black Hole Mergers
Barak Zackay, Liang Dai, Tejaswi Venumadhav +2
We introduce a new technique to search for gravitational wave events from compact binary mergers that produce a clear signal only in a single gravitational wave detector, and margi…
SN 2018fif: The Explosion of a Large Red Supergiant Discovered in Its Infancy by the Zwicky Transient Facility
Maayane T. Soumagnac, Noam Ganot, Ido Irani +32
High cadence transient surveys are able to capture supernovae closer to their first light than before. Applying analytical models to such early emission, we can constrain the proge…
New binary black hole mergers in the second observing run of Advanced LIGO and Advanced Virgo
Tejaswi Venumadhav, Barak Zackay, Javier Roulet +2
We report the detection of new binary black hole merger events in the publicly available data from the second observing run of advanced LIGO and advanced Virgo (O2). The mergers we…
A Highly Spinning and Aligned Binary Black Hole Merger in the Advanced LIGO First Observing Run
Barak Zackay, Tejaswi Venumadhav, Liang Dai +2
We report a new binary black hole merger in the publicly available LIGO First Observing Run (O1) data release. The event has an inverse false alarm rate of one per six years in the…
Gravitational-wave-moderated Accretion: The Case of ES Ceti
Matthew S. B. Coleman, Tejaswi Venumadhav, Barak Zackay
We show that recent observations of the compact binary, AM CVn type system, ES Ceti are fully consistent with theoretical predictions of stable mass transfer moderated by angular m…
A six year image-subtraction light curve of SN 2010jl
E. O. Ofek, B. Zackay, A. Gal-Yam +9
SN2010jl was a luminous Type IIn supernova (SN), detected in radio, optical, X-ray and hard X-rays. Here we report on its six year R- and g-band light curves obtained using the Pal…
The detection of an extremely bright fast radio burst in a phased array feed survey
Keith Bannister, Ryan Shannon, Jean-Pierre Macquart +53
We report the detection of an ultra-bright fast radio burst (FRB) from a modest, 3.4-day pilot survey with the Australian Square Kilometre Array Pathfinder. The survey was conducte…