Search Results - "Sachdev, Surabhi"
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1
Swiftly Chasing Gravitational Waves across the Sky in Real Time
Published in Astrophysical journal. Letters (01-11-2024)“…Abstract We introduce a new capability of the Neil Gehrels Swift Observatory, dubbed “continuous commanding,” that achieves 10 s latency response time on orbit…”
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2
GstLAL: A software framework for gravitational wave discovery
Published in SoftwareX (01-06-2021)“…The GstLAL library, derived from Gstreamer and the LIGO Algorithm Library, supports a stream-based approach to gravitational-wave data processing. Although…”
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3
Cross-correlating galaxy catalogs and gravitational waves: A tomographic approach
Published in Physical review research (09-06-2020)“…Unveiling the origin of the coalescing binaries detected via gravitational waves (GWs) is challenging, notably if no multiwavelength counterpart is detected…”
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4
Gravitational Wave Constraints on Planetary-Mass Primordial Black Holes Using LIGO O3a Data
Published in Physical review letters (13-09-2024)“…Gravitational waves from subsolar mass inspiraling compact objects would provide almost smoking-gun evidence for primordial black holes (PBHs). We perform the…”
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5
Searching for Asymmetric and Heavily Precessing Binary Black Holes in the Gravitational Wave Data from the LIGO Third Observing Run
Published in Physical review letters (01-11-2024)Get full text
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Low-latency gravitational wave alert products and their performance at the time of the fourth LIGO-Virgo-KAGRA observing run
Published in Proceedings of the National Academy of Sciences - PNAS (30-04-2024)“…Multimessenger searches for binary neutron star (BNS) and neutron star-black hole (NSBH) mergers are currently one of the most exciting areas of astronomy. The…”
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7
Searching for Gravitational Waves from Compact Binary Coalescences in Advanced LIGO Data
Published 01-01-2019“…Advanced LIGO's first observing run marked the birth of gravitational-wave astronomy through the first detection of gravitational waves from coalescing black…”
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Dissertation -
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Calibrating gravitational-wave search algorithms with conformal prediction
Published 29-02-2024“…In astronomy, we frequently face the decision problem: does this data contain a signal? Typically, a statistical approach is used, which requires a threshold…”
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Towards inference of overlapping gravitational wave signals
Published 27-04-2022“…Merger rates of binary black holes, binary neutron stars, and neutron star-black hole binaries in the local Universe (i.e., redshift $z=0$), inferred from the…”
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10
Rapid localization and inference on compact binary coalescences with the Advanced LIGO-Virgo-KAGRA gravitational-wave detector network
Published 25-07-2023“…We present a rapid parameter estimation framework for compact binary coalescence (CBC) signals observed by the LIGO-Virgo-KAGRA (LVK) detector network. The…”
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11
Swiftly chasing gravitational waves across the sky in real-time
Published 08-10-2024“…We introduce a new capability of the Neil Gehrels Swift Observatory, dubbed `continuous commanding,' achieving 10 seconds latency response time on-orbit to…”
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Journal Article -
12
Gravitational wave constraints on planetary-mass primordial black holes using LIGO O3a data
Published 25-07-2024“…Phys. Rev. Lett. 133, 111401 (2024) Gravitational waves from sub-solar mass inspiraling compact objects would provide almost smoking-gun evidence for…”
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13
Method to search for inspiraling planetary-mass ultra-compact binaries using the generalized frequency-Hough transform in LIGO O3a data
Published 24-07-2024“…Phys. Rev. D 110, 082004 (2024) Gravitational waves from sub-solar mass primordial black holes could be detected in LIGO, Virgo and KAGRA data. Here, we apply…”
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14
Subtracting compact binary foreground sources to reveal primordial gravitational-wave backgrounds
Published 13-02-2020“…Phys. Rev. D 102, 024051 (2020) Detection of primordial gravitational-wave backgrounds generated during the early universe phase transitions is a key science…”
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15
Early warning of coalescing neutron-star and neutron-star-black-hole binaries from nonstationary noise background using neural networks
Published 19-04-2021“…Phys. Rev. D 104, 062004 (2021) The success of the multi-messenger astronomy relies on gravitational-wave observatories like LIGO and Virgo to provide prompt…”
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16
Archival searches for stellar-mass binary black holes in LISA
Published 05-11-2020“…Phys. Rev. D 103, 023025 (2021) Stellar-mass binary black holes will sweep through the frequency band of the Laser Interferometer Space Antenna (LISA) for…”
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17
Targeted Sub-threshold Search for Strongly-lensed Gravitational-wave Events
Published 14-06-2023“…Phys. Rev. D, Vol 107, Iss. 12, 15 June 2023 Strong gravitational lensing of gravitational waves can produce duplicate signals separated in time with different…”
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Searching for asymmetric and heavily precessing Binary Black Holes in the gravitational wave data from the LIGO and Virgo third Observing Run
Published 25-06-2024“…Leveraging the features of the GstLAL pipeline, we present the results of a matched filtering search for asymmetric binary black hole systems with heavily…”
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19
Searching for gravitational-wave signals from precessing black hole binaries with the GstLAL pipeline
Published 25-03-2024“…Precession in Binary Black Holes (BBH) is caused by the failure of the Black Hole spins to be aligned and its study can open up new perspectives in…”
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20
Template bank for compact binary mergers in the fourth observing run of Advanced LIGO, Advanced Virgo, and KAGRA
Published 21-12-2023“…Matched-filtering gravitational wave search pipelines identify gravitational wave signals by computing correlations, i.e., signal-to-noise ratios, between…”
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Journal Article