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Radio Transient Searches from Millisecond to Hour-Long Time Scales- [electronic resource]
Radio Transient Searches from Millisecond to Hour-Long Time Scales- [electronic resource]
상세정보
- 자료유형
- 학위논문(국외)
- 자관 청구기호
- 기본표목-개인명
- 표제와 책임표시사항
- Radio Transient Searches from Millisecond to Hour-Long Time Scales - [electronic resource] / Akshay Suresh
- 발행, 배포, 간사 사항
- 발행, 배포, 간사 사항
- 형태사항
- 1 online resource(p.202 )
- 일반주기
- Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
- 일반주기
- Advisor: Cordes, James.
- 학위논문주기
- Thesis (Ph.D.)--Cornell University, 2023.
- 이용제한주기
- This item must not be sold to any third party vendors.
- 요약 등 주기
- 요약Time-domain radio astronomy is a burgeoning field of study, with rapid event detection rates enabled by significant advancements in technology and computing power. Modern radio telescopes output large data rates of over 1 TB/hour, necessitating efficient automated pipelines for signal detection and follow-up. Leveraging state-of-the-art radio telescopes and supercomputing facilities, we conducted targeted searches for diverse astrophysical phenomena, including millisecond-duration radio bursts, pulsars, periodic transmissions from advanced extraterrestrial worlds, and hour-long star-planet interactions. Our prime sky regions of focus included the M87 galaxy and the Galactic Center (GC), which we surveyed for elusive bursts and periodic signals respectively. In addition, we investigated the mysterious radio emission of two objects, namely the GC magnetar PSR J1745-2900 and the nearby main-sequence star ε Eridani. Our studies revealed a dearth of bursts from M87 and a non-detection of periodic signals from the GC, thus setting stringent population-level constraints on potential emitters in their respective environments. We successfully detected the GC magnetar, thereby providing conclusive evidence of its gradual weakening since 2015. Finally, we reported the discovery of 2-4 GHz continuum emission from ε Eridani, thus tracing the origin of its decimeter-wave emission to thermal radiation from the stellar corona and chromosphere.
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 부출표목-단체명
- 기본자료저록
- Dissertations Abstracts International. 85-03B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 원문정보보기
- 소장사항
-
202402 2024
MARC
008240306s2023 us s 000c| eng d■001000016933173
■00520240214101213
■006m o d
■007cr
■020 ▼a9798380314862
■035 ▼a(MiAaPQ)AAI30525693
■040 ▼aMiAaPQ▼cMiAaPQ
■08204▼a520▼222
■090 ▼a전자도서(박사논문)
■1001 ▼aSuresh, Akshay.▼0(orcid)0000-0002-5389-7806
■24510▼aRadio Transient Searches from Millisecond to Hour-Long Time Scales▼h[electronic resource]▼cAkshay Suresh
■260 ▼a[S.l.]▼bCornell University. ▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a1 online resource(p.202 )
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-03, Section: B.
■500 ▼aAdvisor: Cordes, James.
■5021 ▼aThesis (Ph.D.)--Cornell University, 2023.
■506 ▼aThis item must not be sold to any third party vendors.
■520 ▼aTime-domain radio astronomy is a burgeoning field of study, with rapid event detection rates enabled by significant advancements in technology and computing power. Modern radio telescopes output large data rates of over 1 TB/hour, necessitating efficient automated pipelines for signal detection and follow-up. Leveraging state-of-the-art radio telescopes and supercomputing facilities, we conducted targeted searches for diverse astrophysical phenomena, including millisecond-duration radio bursts, pulsars, periodic transmissions from advanced extraterrestrial worlds, and hour-long star-planet interactions. Our prime sky regions of focus included the M87 galaxy and the Galactic Center (GC), which we surveyed for elusive bursts and periodic signals respectively. In addition, we investigated the mysterious radio emission of two objects, namely the GC magnetar PSR J1745-2900 and the nearby main-sequence star ε Eridani. Our studies revealed a dearth of bursts from M87 and a non-detection of periodic signals from the GC, thus setting stringent population-level constraints on potential emitters in their respective environments. We successfully detected the GC magnetar, thereby providing conclusive evidence of its gradual weakening since 2015. Finally, we reported the discovery of 2-4 GHz continuum emission from ε Eridani, thus tracing the origin of its decimeter-wave emission to thermal radiation from the stellar corona and chromosphere.
■590 ▼aSchool code: 0058.
■650 4▼aAstronomy.
■650 4▼aPhysics.
■650 4▼aAstrophysics.
■650 4▼aPlanetology.
■653 ▼aData-driven astronomy
■653 ▼aPeriodic signals
■653 ▼aPulsars
■653 ▼aRadio bursts
■653 ▼aRadio transients
■690 ▼a0606
■690 ▼a0605
■690 ▼a0596
■690 ▼a0590
■71020▼aCornell University▼bAstronomy and Space Sciences.
■7730 ▼tDissertations Abstracts International▼g85-03B.
■773 ▼tDissertation Abstract International
■790 ▼a0058
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16933173▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024
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