Search Results - "Kulkarni, Shrinivas R."
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1
The Zwicky Transient Facility: Surveys and Scheduler
Published in Publications of the Astronomical Society of the Pacific (01-06-2019)“…We present a novel algorithm for scheduling the observations of time-domain imaging surveys. Our integer linear programming approach optimizes an observing…”
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2
The Zwicky Transient Facility Alert Distribution System
Published in Publications of the Astronomical Society of the Pacific (01-01-2019)“…The Zwicky Transient Facility (ZTF) survey generates real-time alerts for optical transients, variables, and moving objects discovered in its wide-field…”
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3
Seventeen Tidal Disruption Events from the First Half of ZTF Survey Observations: Entering a New Era of Population Studies
Published in The Astrophysical journal (01-02-2021)“…While tidal disruption events (TDEs) have long been heralded as laboratories for the study of quiescent black holes, the small number of known TDEs and…”
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4
PRECURSORS PRIOR TO TYPE IIn SUPERNOVA EXPLOSIONS ARE COMMON: PRECURSOR RATES, PROPERTIES, AND CORRELATIONS
Published in The Astrophysical journal (10-07-2014)“…There is a growing number of Type IIn supernovae (SNe) which present an outburst prior to their presumably final explosion. These precursors may affect the SN…”
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5
Spectra of Hydrogen-poor Superluminous Supernovae from the Palomar Transient Factory
Published in The Astrophysical journal (01-03-2018)“…Most Type I superluminous supernovae (SLSNe-I) reported to date have been identified by their high peak luminosities and spectra lacking obvious signs of…”
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6
The First Tidal Disruption Flare in ZTF: From Photometric Selection to Multi-wavelength Characterization
Published in The Astrophysical journal (20-02-2019)“…We present Zwicky Transient Facility (ZTF) observations of the tidal disruption flare AT2018zr/PS18kh reported by Holoien et al. and detected during ZTF…”
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7
The Outer Halo of the Milky Way as Probed by RR Lyr Variables from the Palomar Transient Facility
Published in The Astrophysical journal (10-11-2017)“…Abstract RR Lyrae stars are ideal massless tracers that can be used to study the total mass and dark matter content of the outer halo of the Milky Way (MW)…”
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8
Census of the Local Universe (CLU) Narrowband Survey. I. Galaxy Catalogs from Preliminary Fields
Published in The Astrophysical journal (20-07-2019)“…We present the Census of the Local Universe (CLU) narrowband survey to search for emission-line (H ) galaxies. CLU-H has imaged 3π of the sky (26,470 deg2)…”
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The Palomar Transient Factory: System Overview, Performance, and First Results
Published in Publications of the Astronomical Society of the Pacific (01-12-2009)“…The Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The transient…”
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10
Variability of Red Supergiants in M31 from the Palomar Transient Factory
Published in The Astrophysical journal (20-05-2018)“…Most massive stars end their lives as red supergiants (RSGs), a short-lived evolutionary phase when they are known to pulsate with varying amplitudes. The RSG…”
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11
A Systematic Study of Ia-CSM Supernovae from the ZTF Bright Transient Survey
Published in The Astrophysical journal (01-05-2023)“…Abstract Among the supernovae (SNe) that show strong interaction with a circumstellar medium (CSM), there is a rare subclass of Type Ia supernovae, SNe Ia-CSM,…”
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12
ON THE EARLY-TIME EXCESS EMISSION IN HYDROGEN-POOR SUPERLUMINOUS SUPERNOVAE
Published in The Astrophysical journal (20-01-2017)“…ABSTRACT We present the light curves of the hydrogen-poor superluminous supernovae (SLSNe I) PTF 12dam and iPTF 13dcc, discovered by the (intermediate) Palomar…”
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13
iPTF 16hgs: A Double-peaked Ca-rich Gap Transient in a Metal-poor, Star-forming Dwarf Galaxy
Published in The Astrophysical journal (10-10-2018)“…Calcium-rich gap transients represent an intriguing new class of faint and fast-evolving supernovae that exhibit strong [Ca ii] emission in their nebular phase…”
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14
A Non-equipartition Shock Wave Traveling in a Dense Circumstellar Environment around SN 2020oi
Published in The Astrophysical journal (01-11-2020)“…Abstract We report the discovery and panchromatic follow-up observations of the young Type Ic supernova (SN Ic) SN 2020oi in M100, a grand-design spiral galaxy…”
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15
The Double-peaked Radio Light Curve of Supernova PTF11qcj
Published in The Astrophysical journal (20-02-2019)“…We present continued radio and X-ray follow-up observations of PTF11qcj, a highly energetic broad-lined Type Ic supernova (SN), with a radio peak luminosity…”
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The Zwicky Transient Facility Bright Transient Survey. III. BTSbot: Automated Identification and Follow-up of Bright Transients with Deep Learning
Published in The Astrophysical journal (01-09-2024)“…Abstract The Bright Transient Survey (BTS) aims to obtain a classification spectrum for all bright ( m peak ≤ 18.5 mag) extragalactic transients found in the…”
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17
SRGeJ045359.9+622444: A 55 Minute Period Eclipsing AM Canum Venaticorum Star Discovered from a Joint SRG/eROSITA + ZTF Search
Published in The Astrophysical journal (01-09-2023)“…Abstract AM Canum Venaticorum (AM CVn) systems are ultracompact binaries where a white dwarf accretes from a helium-rich degenerate or semidegenerate donor…”
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18
SN 2020jgb: A Peculiar Type Ia Supernova Triggered by a Helium-shell Detonation in a Star-forming Galaxy
Published in The Astrophysical journal (01-04-2023)“…Abstract The detonation of a thin (≲0.03 M ⊙ ) helium shell (He-shell) atop a ∼1 M ⊙ white dwarf (WD) is a promising mechanism to explain normal Type Ia…”
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19
A Search for Relativistic Ejecta in a Sample of ZTF Broad-lined Type Ic Supernovae
Published in The Astrophysical journal (01-08-2023)“…Abstract The dividing line between gamma-ray bursts (GRBs) and ordinary stripped-envelope core-collapse supernovae (SNe) is yet to be fully understood…”
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20
Discovery of Two Polars from a Crossmatch of ZTF and the SRG/eFEDS X-Ray Catalog
Published in The Astrophysical journal (01-03-2023)“…Abstract Magnetic cataclysmic variables (CVs) are luminous Galactic X-ray sources, which have been difficult to find in purely optical surveys due to their…”
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