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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]...
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  
[S.l.] : Cornell University. , 2023
    발행, 배포, 간사 사항  
    Ann Arbor : ProQuest Dissertations & Theses , 2023
      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  
      Cornell University Astronomy and Space Sciences
        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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