Search Results - "DeMarchi, Lindsay"
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1
A cool and inflated progenitor candidate for the Type Ib supernova 2019yvr at 2.6 yr before explosion
Published in Monthly notices of the Royal Astronomical Society (01-06-2021)“…ABSTRACT We present Hubble Space Telescope imaging of a pre-explosion counterpart to SN 2019yvr obtained 2.6 yr before its explosion as a type Ib supernova…”
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Journal Article -
2
Prospects for Multimessenger Observations of Thorne–Żytkow Objects
Published in The Astrophysical journal (01-04-2021)“…Abstract Thorne–Żytkow objects (TŻOs) are a class of stellar object comprised of a neutron star core surrounded by a large and diffuse envelope. Their exterior…”
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Journal Article -
3
Radio and X-Ray Observations of the Luminous Fast Blue Optical Transient AT 2020xnd
Published in The Astrophysical journal (01-02-2022)“…Abstract We present deep X-ray and radio observations of the fast blue optical transient (FBOT) AT 2020xnd/ZTF 20acigmel at z = 0.2433 from 13 days to 269 days…”
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4
Radio Analysis of SN2004C Reveals an Unusual CSM Density Profile as a Harbinger of Core Collapse
Published in The Astrophysical journal (01-10-2022)“…Abstract We present extensive multifrequency Karl G. Jansky Very Large Array (VLA) and Very Long Baseline Array (VLBA) observations of the radio-bright…”
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5
A Multimessenger and Multiwavelength Approach to Uncovering the Transient Universe
Published 01-01-2023“…Astronomy has entered a “multimessenger” era: one that combines electromagnetic “sight” with gravitational “touch.” This dissertation serves as a roadmap of…”
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Dissertation -
6
SN 2019ehk: A Double-peaked Ca-rich Transient with Luminous X-Ray Emission and Shock-ionized Spectral Features
Published in The Astrophysical journal (01-08-2020)“…We present panchromatic observations and modeling of the Calcium-rich supernova (SN) 2019ehk in the star-forming galaxy M100 (d 16.2 Mpc) starting 10 hr after…”
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Journal Article -
7
Seven Years of Coordinated Chandra–NuSTAR Observations of SN 2014C Unfold the Extreme Mass-loss History of Its Stellar Progenitor
Published in The Astrophysical journal (01-11-2022)“…Abstract We present the results from our 7 yr long broadband X-ray observing campaign of SN 2014C with Chandra and NuSTAR. These coordinated observations…”
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Journal Article -
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SPITZER OBSERVATIONS OF LONG-TERM INFRARED VARIABILITY AMONG YOUNG STELLAR OBJECTS IN CHAMAELEON I
Published in The Astrophysical journal (10-12-2016)“…ABSTRACT Infrared variability is common among young stellar objects, with surveys finding daily to weekly fluctuations of a few tenths of a magnitude…”
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Journal Article -
9
Prospects for Multimessenger Observations of Thorne-\.Zytkow Objects
Published 05-03-2021“…Thorne-\.Zytkow objects (T\.ZOs) are a class of stellar object comprised of a neutron star core surrounded by a large and diffuse envelope. Their exterior…”
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Journal Article -
10
Astronomy as a Field: A Guide for Aspiring Astrophysicists
Published 07-12-2023“…This book was created as part of the SIRIUS B VERGE program to orient students to astrophysics as a broad field. The 2023-2024 VERGE program and the printing…”
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Journal Article -
11
Seven years of coordinated Chandra-NuSTAR observations of SN2014C unfold the extreme mass-loss history of its stellar progenitor
Published 02-06-2022“…We present the results from our seven-year long broad-band X-ray observing campaign of SN\,2014C with \emph{Chandra} and \emph{NuSTAR}. These coordinated…”
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Journal Article -
12
Constraints on the Sub-pc Environment of the Nearby Type Iax SN 2014dt from Deep X-ray and Radio Observations
Published 18-03-2021“…We present X-ray and radio observations of what may be the closest type Iax supernova (SN) to date, SN 2014dt (d=12.3-19.3 Mpc) and provide tight constraints…”
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Journal Article -
13
Radio Analysis of SN 2004C Reveals an Unusual CSM Density Profile as a Harbinger of Core Collapse
Published 14-03-2022“…We present extensive multi-frequency VLA and VLBA observations of the radio-bright supernova (SN) IIb SN 2004C that span $\sim(40-2793)$ days post-explosion…”
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Journal Article -
14
Evidence for Extended Hydrogen-Poor CSM in the Three-Peaked Light Curve of Stripped Envelope Ib Supernova
Published 14-07-2022“…We present multi-band ATLAS photometry for SN 2019tsf, a stripped-envelope Type Ib supernova (SESN). The SN shows a triple-peaked light curve and a late…”
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Journal Article -
15
Radio and X-ray observations of the luminous Fast Blue Optical Transient AT2020xnd
Published 11-10-2021“…We present deep X-ray and radio observations of the Fast Blue Optical Transient (FBOT) AT2020xnd/ZTF20acigmel at $z=0.2433$ from $13$d to $269$d after…”
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Journal Article -
16
A Cool and Inflated Progenitor Candidate for the Type Ib Supernova 2019yvr at 2.6 Years Before Explosion
Published 08-01-2021“…We present Hubble Space Telescope imaging of a pre-explosion counterpart to SN 2019yvr obtained 2.6 years before its explosion as a type Ib supernova (SN Ib)…”
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Journal Article -
17
Final Moments I: Precursor Emission, Envelope Inflation, and Enhanced Mass loss Preceding the Luminous Type II Supernova 2020tlf
Published 13-12-2021“…We present panchromatic observations and modeling of supernova (SN) 2020tlf, the first normal type II-P/L SN with confirmed precursor emission, as detected by…”
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Progenitor and Close-In Circumstellar Medium of Type II Supernova 2020fqv from High-Cadence Photometry and Ultra-Rapid UV Spectroscopy
Published 20-10-2021“…We present observations of SN 2020fqv, a Virgo-cluster Type II core-collapse supernova (CCSN) with a high temporal resolution light curve from the Transiting…”
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Journal Article -
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The Circumstellar Environments of Double-Peaked, Calcium-strong Supernovae 2021gno and 2021inl
Published 08-03-2022“…We present panchromatic observations and modeling of calcium-strong supernovae (SNe) 2021gno in the star-forming host galaxy NGC 4165 (D = 30.5 Mpc) and…”
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Journal Article -
20
SN 2019ehk: A Double-Peaked Ca-rich Transient with Luminous X-ray Emission and Shock-Ionized Spectral Features
Published 01-07-2020“…We present panchromatic observations and modeling of the Calcium-rich supernova 2019ehk in the star-forming galaxy M100 (d$\approx$16.2 Mpc) starting 10 hours…”
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Journal Article