| Description |
1 online resource (xxi, 307 pages) : illustrations |
| Series |
Springer theses |
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Springer theses.
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| Contents |
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 |
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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 |
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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 |
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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 |
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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 |
| 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. |
| Notes |
"Doctoral thesis accepted by California Institute of Technology, in USA." |
| Bibliography |
Includes bibliographical references |
| Notes |
Online resource; title from PDF title page (SpringerLink, viewed November 17, 2022) |
| Subject |
Stars.
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Stellar activity.
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Relativistic astrophysics.
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Gamma ray bursts.
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Gamma ray bursts
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Relativistic astrophysics
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Stars
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Stellar activity
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| Form |
Electronic book
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| ISBN |
9783031153679 |
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3031153677 |
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