RUI: Investigating Extragalactic Gamma Ray Propagation

RUI：研究河外伽马射线传播

• 批准号: 1806560
• 负责人: Amy Furniss
• 金额: $ 24.58万
• 依托单位: California State University, East Bay Foundation, Inc.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1806560&HistoricalAwards=false
• 关键词: RUI; Investigating; Extragalactic; Gamma; Ray

Gamma-rays are the highest energy form of electromagnetic radiation. Observations of astrophysical gamma-rays serve as probes of physical conditions and processes in the most extreme environments throughout the Universe and can be used to test fundamental physics. The Very Energetic Radiation Imaging Telescope Array System (VERITAS), located in southern Arizona, is designed to perform high-sensitivity pointed observations of both galactic and extragalactic sources. This award supports scientists at California State University East Bay (CSUEB) in their work on VERITAS. Dr. Furniss and her group will analyze VERITAS data to study high-energy gamma-ray emitting galaxies and probe the extragalactic magnetic fields that permeate the Universe. This project will directly engage undergraduates in particle astrophysics research. Students involved in the project will visit the VERITAS observatory and contribute to on-site operations and data collection.The CSUEB group will collect and utilize VERITAS observations of very high-energy emitting active galaxies to study extragalactic gamma-ray photon propagation. The group will contribute to the first VERITAS extragalactic catalog of these sources. The isotropy of gamma-ray galaxies will be tested, and the location of the sources with respect to the integrated mass density along the source lines-of-sight will be characterized using publicly available catalogs. A theoretical connection between the extragalactic magnetic fields along the lines of sight to detected sources will be investigated through the use of simulations of extragalactic gamma-ray initiated cascades.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

伽马射线是电磁辐射的最高能量形式。 对天体物理学伽马射线的观测可以作为整个宇宙中最极端环境中的物理条件和过程的探测器，并可用于测试基础物理学。位于亚利桑那州南部的高能辐射成像望远镜阵列系统（VERITAS）旨在对银河系和河外源进行高灵敏度的定点观测。 该奖项支持加州州立大学东湾（CSUEB）的科学家在VERITAS方面的工作。 Dr. Pastiiss和她的团队将分析VERITAS数据，研究高能伽马射线发射星系，并探测渗透宇宙的河外磁场。 该项目将直接吸引本科生参与粒子天体物理学研究。 参与该项目的学生将访问VERITAS观测台，并为现场操作和数据收集作出贡献，CSUEB小组将收集和利用VERITAS对发射甚高能量的活动星系的观测，以研究河外伽马射线光子传播。 该小组将为第一个VERITAS河外星系源目录做出贡献。 将测试伽马射线星系的各向同性，并将使用公开可用的星表来表征源的位置相对于沿源视线沿着的综合质量密度。 将通过模拟河外伽马射线引发的级联来研究沿观测线沿着到探测源的河外磁场之间的理论联系。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period

• DOI: 10.3847/2041-8213/aae70e
• 发表时间: 2018-10
• 期刊: The Astrophysical Journal Letters
• 作者: T. V. C. A. U. Abeysekara;W. Benbow;R. Bird;A. Brill;R. Brose;J. Buckley;A. Chromey;M. Daniel

VERITAS Observations of the Galactic Center Region at Multi-TeV Gamma-Ray Energies

• DOI: 10.3847/1538-4357/abf926
• 发表时间: 2021-04
• 期刊: The Astrophysical Journal
• 作者: J. Ryan

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

• DOI: 10.3847/2041-8213/abef71
• 发表时间: 2021-04
• 作者: J. Algaba;J. Anczarski;K. Asada;M. Balokovi;S. Chandra;Y.-Z. Cui;A. Falcone;M. Giroletti;C. Goddi;K. Hada;D. Haggard;S. Jorstad;A. Kaur;T. Kawashima;G. Keating;J. Kim;M. Kino;E. Kravchenko;M. Lucchini;S. Markoff;J. Neilsen;M. A. Nowak;J. Park;G. Principe;V. Ramakrishnan;M. T. Reynolds;M. Sasada;K. Akiyama;A. Alberdi;W. Alef;R. Anantua;R. Azulay;A. Baczko;D. Ball;J. Barrett;D. Bintley;B. Benson;L. Blackburn;R. Blundell;W. Boland;K. Bouman;G. Bower;H. Boyce;M. Bremer;C. Brinkerink;R. Brissenden;S. Britzen;A. Broderick;D. Broguiere;T. Bronzwaer;D. Byun;J. Carlstrom;A. Chael;Chi-kwan Chan;S. Chatterjee;K. Chatterjee;Ming-Tang Chen;P. Chesler;I. Cho;P. Christian;J. Conway;J. Cordes;T. Crawford;A. Cruz-Osorio;J. Davelaar;M. Laurentis;R. Deane;J. Dempsey;G. Desvignes;J. Dexter;S. Doeleman;R. Eatough;H. Falcke;J. Farah;V. Fish;E. Fomalont;H. Ford;R. Fraga-Encinas;P. Friberg;C. Fromm;A. Fuentes;P. Galison;C. Gammie;Roberto García;O. Gentaz;B. Georgiev;R. Gold;J. Gómez;M. Gurwell;M. H. Hecht;R. Hesper;P. Ho;M. Honma;Chih-Wei L. Huang;David H. Hughes;Shiro Ikeda;M. Inoue;S. Issaoun;D. J. James;B. Jannuzi;M. Janssen;B. Jeter;A. Jiménez-Rosales;Michael D. Johnson;T. Jung;M. Karami;R. Karuppusamy;M. Kettenis;Dong-Jin Kim;Jongsoo Kim;Junhan Kim;J. Koay;Y. Kofuji;P. Koch;S. Koyama;M. Kramer;C. Kramer;C. Kuo;T. Lauer;A. Levis;M. Lindqvist;R. Lico;G. Lindahl;Kuo Liu;E. Liuzzo;Wen-Ping Lo;A. Lobanov;L. Loinard;C. Lonsdale;N. MacDonald;N. Marchili;D. Marrone;A. Marscher;I. Martí-Vidal;S. Matsushita;L. Matthews;L. Medeiros;K. Menten;I. Mizuno;Y. Mizuno;J. M. Moran;Kotaro Moriyama;M. Mościbrodzka;C. Müller;G. Musoke;A. Mejías;H. Nagai;M. Nakamura;Ramesh Narayan;G. Narayanan;I. Natarajan;A. Nathanail;R. Neri;C. Ni;A. Noutsos;H. Okino;H. Olivares;G. Ortiz-Léon;T. Oyama;F. Özel;D. Palumbo;N. Patel;D. Pesce;V. Piétu;R. Plambeck;A. PopStefanija;O. Porth;F. M. Pötzl;B. Prather;J. A. Preciado-López;D. Psaltis;Hung-Yi Pu;R. Rao;M. Rawlings;A. Raymond;L. Rezzolla;Angelo Ricarte;B. Ripperda;F. Roelofs;Alan Rogers;E. Ros;M. Rose;A. Roshanineshat;H. Rottmann;A. Roy;C. Ruszczyk;K. Rygl;S. Sánchez;D. Sánchez-Arguelles;T. Savolainen;F. Schloerb;K. Schuster;Lijing Shao;B. Sohn;J. SooHoo;F. Tazaki;A. Tetarenko;P. Tiede;R. Tilanus;M. Titus;K. Toma;P. Torne;T. Trent;E. Traianou;S. Trippe;H. V. Langevelde;D. V. Rossum;J. Wagner;D. Ward-Thompson;J. Wardle;J. Weintroub;N. Wex;R. Wharton;M. Wielgus;G. Wong;A. Young;K. Young;Guangyao Zhao;F. Aharonian;E. Angüner;C. Arcaro;C. Armand;T. Armstrong;H. Ashkar;Michael Backes;V. Baghmanyan;V. B. Martins;A. Barnacka;M. Barnard;Y. Becherini;D. Berge;K. Bernlöhr;J. Bolmont;M. Breuhaus;F. Brun;P. Brun;M. Bryan;M. Büchele;T. Bulik;T. Bylund

Variability and Spectral Characteristics of Three Flaring Gamma-Ray Quasars Observed by VERITAS and Fermi-LAT

VERITAS 和 Fermi-LAT 观测到的三个耀斑伽马射线类星体的变异性和光谱特征

• DOI: 10.3847/1538-4357/ac32bd
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Adams, C. B.;Batshoun, J.;Benbow, W.;Brill, A.;Buckley, J. H.;Capasso, M.;Cavins, B.;Christiansen, J. L.;Coppi, P.;Errando, M.
• 通讯作者: Errando, M.

Multiwavelength Observations of the Blazar VER J0521+211 during an Elevated TeV Gamma-Ray State

Blazer VER J0521 211 在高 TeV 伽马射线状态下的多波长观测

• DOI: 10.3847/1538-4357/ac6dd9
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Adams, C. B.;Batista, P.;Benbow, W.;Brill, A.;Brose, R.;Buckley, J. H.;Capasso, M.;Christiansen, J. L.;Errando, M.;Feng, Q.
• 通讯作者: Feng, Q.