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Multi-Messenger Search for Galactic PeVatron With HAWC and IceCube.
Multi-Messenger Search for Galactic PeVatron With HAWC and IceCube.

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자료유형  
 학위논문
Control Number  
0017162708
International Standard Book Number  
9798384423409
Dewey Decimal Classification Number  
530
Main Entry-Personal Name  
Fan, Kwok Lung.
Publication, Distribution, etc. (Imprint  
[S.l.] : University of Maryland, College Park., 2024
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2024
Physical Description  
175 p.
General Note  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
General Note  
Advisor: Goodman, Jordan A.;Sullivan, Gregory W.
Dissertation Note  
Thesis (Ph.D.)--University of Maryland, College Park, 2024.
Summary, Etc.  
요약In recent years, many advancements in astrophysics have brought astrophysicists new tools to study the universe. Specifically, the discovery of astrophysical neutrinos by the IceCube Neutrino Observatory and Gravitational waves by the LIGO/Virgo collaboration has started the era of multi-messenger astronomy. Scientists can finally use messengers other than electromagnetic waves to study astrophysical phenomena. With the addition of new messengers, it is crucial that data from multiple instruments and messengers can be jointly analyzed through a unified framework using one physics model. Many efforts have been put into jointly analyzing electromagnetic waves of different wavelengths from different instruments, but the ability to jointly fit other messengers to a single physics model is still missing. In this work, we present a method to jointly analyze data from HAWC Gamma-ray Observatory and IceCube Neutrino Observatory by using a newly developed IceCube likelihood software called i3mla and the existing HAWC likelihood software called HAL. Together with the Multi-Mission Maximum Likelihood framework (3ML), we are able to jointly fit the gamma-ray emission model and neutrino emission model simultaneously with the HAWC gamma-ray and IceCube neutrino data. We apply the method to search for Galactic PeVatrons. Galactic PeVatrons are sources of PeV galactic cosmic rays. When the cosmic ray interacts with nearby material, it will produce both gamma rays and neutrinos with the same morphology and spectral shape. While gamma rays could also be produced from other interactions, neutrinos can only be produced by hadronic interactions of the cosmic ray. Therefore, it is natural to search for neutrino emissions from gamma-ray sources. We first perform a search for neutrino emissions from the 12 known gamma-ray sources detected by LHAASO. No significant detection was found and we put constraints on the neutrino emission on the sources. Second, a more detailed multimessenger search of Galactic PeVatrons candidates using simultaneously the HAWC data and IceCube neutrino data is conducted. We model the gamma-ray emission using the HAWC data and jointly fit a unified model to both the gamma-ray and neutrino data. No significant detection was found and we put constraints on the fraction of the gamma rays due to hadronic interactions.
Subject Added Entry-Topical Term  
Physics.
Subject Added Entry-Topical Term  
Astrophysics.
Subject Added Entry-Topical Term  
Particle physics.
Index Term-Uncontrolled  
Astrophysicists
Index Term-Uncontrolled  
Electromagnetic waves
Index Term-Uncontrolled  
Gamma-ray emission
Added Entry-Corporate Name  
University of Maryland, College Park Physics
Host Item Entry  
Dissertations Abstracts International. 86-03B.
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:654215

MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aFan,  Kwok  Lung.▼0(orcid)0000-0002-8246-4751
■24510▼aMulti-Messenger  Search  for  Galactic  PeVatron  With  HAWC  and  IceCube.
■260    ▼a[S.l.]▼bUniversity  of  Maryland,  College  Park.  ▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a175  p.
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Goodman,  Jordan  A.;Sullivan,  Gregory  W.
■5021  ▼aThesis  (Ph.D.)--University  of  Maryland,  College  Park,  2024.
■520    ▼aIn  recent  years,  many  advancements  in  astrophysics  have  brought  astrophysicists  new  tools  to  study  the  universe.  Specifically,  the  discovery  of  astrophysical  neutrinos  by  the  IceCube  Neutrino  Observatory  and  Gravitational  waves  by  the  LIGO/Virgo  collaboration  has  started  the  era  of  multi-messenger  astronomy.  Scientists  can  finally  use  messengers  other  than  electromagnetic  waves  to  study  astrophysical  phenomena.          With  the  addition  of  new  messengers,  it  is  crucial  that  data  from  multiple  instruments  and  messengers  can  be  jointly  analyzed  through  a  unified  framework  using  one  physics  model.  Many  efforts  have  been  put  into  jointly  analyzing  electromagnetic  waves  of  different  wavelengths  from  different  instruments,  but  the  ability  to  jointly  fit  other  messengers  to  a  single  physics  model  is  still  missing.  In  this  work,  we  present  a  method  to  jointly  analyze  data  from  HAWC  Gamma-ray  Observatory  and  IceCube  Neutrino  Observatory  by  using  a  newly  developed  IceCube  likelihood  software  called  i3mla  and  the  existing  HAWC  likelihood  software  called  HAL.  Together  with  the  Multi-Mission  Maximum  Likelihood  framework  (3ML),  we  are  able  to  jointly  fit  the  gamma-ray  emission  model  and  neutrino  emission  model  simultaneously  with  the  HAWC  gamma-ray  and  IceCube  neutrino  data.          We  apply  the  method  to  search  for  Galactic  PeVatrons.  Galactic  PeVatrons  are  sources  of  PeV  galactic  cosmic  rays.  When  the  cosmic  ray  interacts  with  nearby  material,  it  will  produce  both  gamma  rays  and  neutrinos  with  the  same  morphology  and  spectral  shape.  While  gamma  rays  could  also  be  produced  from  other  interactions,  neutrinos  can  only  be  produced  by  hadronic  interactions  of  the  cosmic  ray.  Therefore,  it  is  natural  to  search  for  neutrino  emissions  from  gamma-ray  sources.  We  first  perform  a  search  for  neutrino  emissions  from  the  12  known  gamma-ray  sources  detected  by  LHAASO.  No  significant  detection  was  found  and  we  put  constraints  on  the  neutrino  emission  on  the  sources.  Second,  a  more  detailed  multimessenger  search  of  Galactic  PeVatrons  candidates  using  simultaneously  the  HAWC  data  and  IceCube  neutrino  data  is  conducted.  We  model  the  gamma-ray  emission  using  the  HAWC  data  and  jointly  fit  a  unified  model  to  both  the  gamma-ray  and  neutrino  data.  No  significant  detection  was  found  and  we  put  constraints  on  the  fraction  of  the  gamma  rays  due  to  hadronic  interactions.
■590    ▼aSchool  code:  0117.
■650  4▼aPhysics.
■650  4▼aAstrophysics.
■650  4▼aParticle  physics.
■653    ▼aAstrophysicists
■653    ▼aElectromagnetic  waves
■653    ▼aGamma-ray  emission
■690    ▼a0605
■690    ▼a0596
■690    ▼a0798
■71020▼aUniversity  of  Maryland,  College  Park▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0117
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162708▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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