The landscape of relativistic stellar explosions / Anna Y.Q. Ho.
Ho, Anna Y. Q., author.
2022
QB801
Available Online

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Title The landscape of relativistic stellar explosions / Anna Y.Q. Ho.
Author Ho, Anna Y. Q., author.
ISBN 9783031153679 (electronic bk.)
3031153677 (electronic bk.)
9783031153662
3031153669
DOI https://doi.org/10.1007/978-3-031-15367-9
Published Cham : Springer, [2022]
Copyright ©2022
Language English
Description 1 online resource (xxi, 307 pages) : illustrations.
Item Number 10.1007/978-3-031-15367-9 doi
Call Number QB801
Dewey Decimal Classification 523.8
Summary This thesis reports the discovery of relativistic stellar explosions outside of the gamma ray band, using optical time domain surveys. It is well known that some massive stars end their lives with the formation of a compact object (a neutron star or black hole) that launches a relativistic jet detectable from earth as a burst of gamma rays. It has long been suspected, however, that gamma ray bursts are only the tip of the iceberg in a broad landscape of relativistic explosions, and so the results presented in this thesis represent a major breakthrough. Highlights of this thesis include: characterization of the first major new class of relativistic explosions in a decade; the discovery of abrupt end-of-life mass-loss in a surprisingly diverse range of stars; and the routine discovery of afterglow emission and several events that may represent baryonically dirty jets or jets viewed slightly off axis. These discoveries necessitated the solution of difficult technical challenges such as the identification of rare and fleeting "needles" in a vast haystack of time-varying phenomena in the night sky, and responding to discoveries within hours to obtain data across the electromagnetic spectrum from X-rays to radio wavelengths. .
Note "Doctoral thesis accepted by California Institute of Technology, in USA."
Bibliography, etc. Note Includes bibliographical references.
Access Note Access limited to authorized users.
Source of Description Online resource; title from PDF title page (SpringerLink, viewed November 17, 2022).
Series Springer theses.
Available in Other Form Print version: 9783031153662
Linked Resources Online Access
Record Appears in Online Resources > Ebooks
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Intro
Supervisor's Foreword
Acknowledgments
Parts of This Thesis Have Been Published in the Following Journal Articles
Contents
1 Introduction and Summary
1.1 Landscape Overview
The GRB View
The Ic-BL SN View
Radio Unification Efforts
1.2 Summary of Thesis
References
Part I Afterglows at Cosmological Distances
2 ZTF20aajnksq (AT2020blt): A Fast Optical Transient at z 2.9 With No Detected Gamma-Ray Burst Counterpart
2.1 Introduction
2.2 Observations
ZTF Discovery
Follow-up Observations
Optical Imaging
Optical Spectroscopy

X-Ray Observations
Radio Observations
Search for Associated GRB
2.3 Comparison to GRB Afterglows
Optical Light Curve
Spectral Energy Distribution
Radio Light Curve
2.4 Interpretation
A Slightly Off-Axis GRB
A Dirty Fireball
2.5 Summary and Conclusions
References
3 iPTF Archival Search for Fast Optical Transients
3.1 Introduction
3.2 Data and Candidate Selection
3.3 Properties of the iPTF M-dwarf Flares
3.4 Rate of Relativistic Fast Optical Transients in iPTF
3.5 Conclusions
3.6 Appendix
References
Part II Low-Luminosity Gamma-Ray Bursts

4 SN2020bvc: A Broad-Lined Type Ic Supernova with a Double-Peaked Optical Light Curve and a Luminous X-ray and Radio Counterpart
4.1 Introduction
4.2 Observations
ZTF Detection and Classification
Host Galaxy
Optical Photometry
Spectroscopy
UV and X-Ray Observations
Submillimeter and Radio Observations
Search for a Gamma-Ray Burst
4.3 Light Curve Analysis
Comparisons to Other Ic-BL SNe
Blackbody Fits
4.4 Spectroscopic Properties
Spectroscopic Evolution and Comparisons
Velocity Estimates from Fe II Features
4.5 Modeling the Light Curve
Nickel Decay

Shock-Cooling
4.6 Modeling the Fast Ejecta
Radio Emission
X-Ray Emission
4.7 Early ZTF Light Curves of Nearby Ic-BL SNe
4.8 Summary and Discussion
4.9 Appendix
Photometry Table
Details: Mass and Radius of the Extended Material
Details: Properties of the Forward Shock
Inverse Compton Scattering
References
Part III Ic-BL Supernovae
Reference
5 The Broad-Lined Ic Supernova ZTF18aaqjovh (SN2018bvw): An Optically Discovered Engine-Driven Supernova Candidate with Luminous Radio Emission
5.1 Introduction
5.2 Observations

Zwicky Transient Facility Discovery
Spectral Classification
Radio Observations
X-Ray Observations
Search for Gamma-Rays
5.3 Analysis and Discussion
Modeling the Optical Light Curve
Properties of the Fastest (Radio-Emitting) Ejecta
Modeling the Radio to X-Ray SED
Gamma-Ray Burst
5.4 Summary and Conclusions
References
6 Evidence for Late-Stage Eruptive Mass Loss in the Progenitor to SN2018gep, a Broad-Lined Ic Supernova: Pre-explosion Emission and a Rapidly Rising Luminous Transient
6.1 Introduction
6.2 Observations
Zwicky Transient Facility Discovery

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