Search Results - "Sravan, Niharika"
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Progenitors of Type IIb Supernovae. I. Evolutionary Pathways and Rates
Published in The Astrophysical journal (10-11-2019)“…Type IIb supernovae (SNe) are important candidates to understand mechanisms that drive the stripping of stripped-envelope (SE) supernova (SN) progenitors…”
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2
Real-time, Value-driven Data Augmentation in the Era of LSST
Published in The Astrophysical journal (01-04-2020)“…The deluge of data from time-domain surveys is rendering traditional human-guided data collection and inference techniques impractical. We propose a novel…”
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3
Machine-directed Gravitational-wave Counterpart Discovery
Published in The Astrophysical journal (01-10-2024)“…Abstract Joint observations in electromagnetic and gravitational waves shed light on the physics of objects and surrounding environments with extreme gravity…”
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Inferencing Progenitor and Explosion Properties of Evolving Core-collapse Supernovae from Zwicky Transient Facility Light Curves
Published in The Astrophysical journal (01-03-2023)“…Abstract We analyze a sample of 45 Type II supernovae from the Zwicky Transient Facility public survey using a grid of hydrodynamical models in order to assess…”
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An updated nuclear-physics and multi-messenger astrophysics framework for binary neutron star mergers
Published in Nature communications (20-12-2023)“…The multi-messenger detection of the gravitational-wave signal GW170817, the corresponding kilonova AT2017gfo and the short gamma-ray burst GRB170817A, as well…”
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Three-dimensional Kinematic Reconstruction of the Optically Emitting, High-velocity, Oxygen-rich Ejecta of Supernova Remnant N132D
Published in The Astrophysical journal (01-05-2020)“…We present a three-dimensional kinematic reconstruction of the optically emitting, oxygen-rich ejecta of supernova remnant N132D in the Large Magellanic Cloud…”
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The Prevalence and Influence of Circumstellar Material around Hydrogen-rich Supernova Progenitors
Published in The Astrophysical journal (01-08-2023)“…Abstract Narrow transient emission lines (flash-ionization features) in early supernova (SN) spectra trace the presence of circumstellar material (CSM) around…”
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Updated Observing Scenarios and Multimessenger Implications for the International Gravitational-wave Networks O4 and O5
Published in The Astrophysical journal (01-12-2023)“…Abstract An advanced LIGO and Virgo’s third observing run brought another binary neutron star merger (BNS) and the first neutron-star black hole mergers. While…”
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The Center of Expansion and Age of the Oxygen-rich Supernova Remnant 1E 0102.2-7219
Published in The Astrophysical journal (01-05-2021)“…Abstract We present new proper-motion measurements of optically emitting oxygen-rich knots of supernova remnant 1E 0102.2-7219 (E0102), which are used to…”
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10
Hubble Space Telescope Proper Motion Measurements of Supernova Remnant N132D: Center of Expansion and Age
Published in The Astrophysical journal (01-05-2023)“…Abstract We present proper motion measurements of the oxygen-rich ejecta of the LMC supernova remnant N132D using two epochs of Hubble Space Telescope Advanced…”
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A JWST Survey of the Supernova Remnant Cassiopeia A
Published in Astrophysical journal. Letters (01-04-2024)“…Abstract We present initial results from a James Webb Space Telescope (JWST) survey of the youngest Galactic core-collapse supernova remnant, Cassiopeia A (Cas…”
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12
Probing Presupernova Mass Loss in Double-peaked Type Ibc Supernovae from the Zwicky Transient Facility
Published in The Astrophysical journal (01-09-2024)“…Abstract Eruptive mass loss of massive stars prior to supernova (SN) explosion is key to understanding their evolution and end fate. An observational signature…”
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13
Progenitors of Type IIb Supernovae. II. Observable Properties
Published in The Astrophysical journal (01-11-2020)“…Type IIb supernovae (SNe IIb) present a unique opportunity for investigating the evolutionary channels and mechanisms governing the evolution of…”
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The Mass Distribution of Stellar-mass Black Holes
Published in The Astrophysical journal (10-11-2011)“…We perform a Bayesian analysis of the mass distribution of stellar-mass black holes using the observed masses of 15 low-mass X-ray binary systems undergoing…”
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15
The Candidate Progenitor Companion Star of the Type Ib/c SN 2013ge
Published in Astrophysical journal. Letters (01-04-2022)“…Abstract This Letter presents the detection of a source at the position of the Type Ib/c supernova (SN) 2013ge more than four years after the radioactive…”
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16
Optical and Radio Analysis of Systematically Classified Broad-lined Type Ic Supernovae from the Zwicky Transient Facility
Published in The Astrophysical journal (01-11-2024)“…We study a magnitude-limited sample of 36 broad-lined type Ic supernovae (SNe Ic-BL) from the Zwicky Transient Facility Bright Transient Survey (detected…”
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17
Updated observing scenarios and multi-messenger implications for the International Gravitational-wave Network's O4 and O5
Published in The Astrophysical journal (2023)“…Advanced LIGO and Virgo's third observing run brought another binary neutron star merger (BNS) and the first neutron-star black-hole (NSBH) mergers. While no…”
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18
A Comprehensive Investigation of Type IIb Supernova Progenitors: Combining Theory, Observations, and Statistics
Published 01-01-2018“…Context: Type IIb supernovae (SNe) are important candidates to understand mechanisms that drive the stripping of stripped-envelope (SE) supernova (SN)…”
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Dissertation -
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Strongly time-variable ultraviolet metal-line emission from the circum-galactic medium of high-redshift galaxies
Published in Monthly notices of the Royal Astronomical Society (21-11-2016)“…We use cosmological simulations from the Feedback In Realistic Environments project, which implement a comprehensive set of stellar feedback processes, to…”
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The Green Monster Hiding in Front of Cas A: JWST Reveals a Dense and Dusty Circumstellar Structure Pockmarked by Ejecta Interactions
Published in Astrophysical journal. Letters (01-11-2024)“…JWST observations of the young Galactic supernova remnant Cassiopeia A revealed an unexpected structure seen as a green emission feature in colored composite…”
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