Astrophysics with Very-High-Energy Gamma Rays

极高能伽马射线的天体物理学

• 批准号: 1707432
• 负责人: David Williams
• 金额: $ 57万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707432&HistoricalAwards=false
• 关键词: Astrophysics; Very; Energy; Gamma; Rays

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. This award supports scientists at the University of California Santa Cruz in carrying out gamma-ray astrophysics research using an operating observatory and participating in the planning and development of the next generation gamma-ray observatory. 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. The University of California Santa Cruz group will work on collection, analysis and interpretation of scientific data from highly-energetic extragalactic sources. The group will also play a leadership role in the development of the Cherenkov Telescope Array (CTA), an international gamma-ray observatory currently in planning stages. The group plans to develop a citizen science program to engage the public in exploring and analyzing the data from VERITAS. They will also continue to engage in a broad range of efforts in education and public outreach.The University of California Santa Cruz group will use VERITAS to explore the extreme behavior of two powerful classes of gamma-ray sources, active galactic nuclei (AGN) and gamma-ray bursts (GRB). Measurements of the very high energy gamma-ray emission from AGN probe properties of the AGN jets and provide important information about the acceleration processes. These data will also be used to study gamma-ray absorption by collisions with the extragalactic background light to test the cosmological model predictions for star formation and galaxy evolution. Using VERITAS data, the group will study GRB mechanisms and the role they play in high energy astrophysical phenomena. The group will continue efforts to develop the next-generation Cherenkov Telescope Array (CTA) and will serve in leadership roles within the collaboration.

伽马射线是电磁辐射的最高能量形式。 天体物理伽马射线的观察是整个宇宙中最极端环境中物理条件和过程的探针，可用于测试基本物理学。 该奖项支持加利福尼亚大学圣克鲁斯分校的科学家使用操作天文台进行伽马射线天体物理学研究，并参与下一代伽马射线天文台的计划和开发。 位于亚利桑那州南部的非常有力的辐射成像望远镜阵列系统（VERITAS）旨在对银河系和外层层面来源进行高敏性尖头观察。 加利福尼亚大学圣克鲁斯分校将从高度能量的外层次来源收集，分析和解释科学数据。 该小组还将在目前正在计划阶段的国际伽马射线天文台Cherenkov望远镜阵列（CTA）的开发中发挥领导作用。 该小组计划制定一项公民科学计划，以吸引公众探索和分析Veritas的数据。 他们还将继续从事教育和公共宣传方面的广泛努力。加利福尼亚大学圣克鲁斯分校将使用Veritas探索两种强大的伽马射线来源的极端行为，即活跃的银河核（AGN）和伽马射线爆发（GRB）。 来自AGN喷气机AGN探针特性的非常高的能量伽马射线发射的测量，并提供有关加速过程的重要信息。 这些数据还将用于研究与层次背景光的碰撞来研究伽马射线吸收，以测试宇宙学模型预测恒星形成和星系进化。使用Veritas数据，该小组将研究GRB机制及其在高能量天体物理现象中所起的作用。 该小组将继续努力开发下一代Cherenkov望远镜阵列（CTA），并将在合作中担任领导角色。

项目成果

Redshift measurement of Fermi blazars for the Cherenkov telescope array

切伦科夫望远镜阵列费米耀变体的红移测量

• DOI: 10.1063/1.4968971
• 发表时间: 2017
• 期刊: AIP Conference Proceedings
• 作者: Pita, Santiago;Goldoni, Paolo;Boisson, Catherine;Cotter, Garret;Lefaucheur, Julien;Lenain, Jean-Philippe;Lindfors, Elina;Williams, David A.
• 通讯作者: Williams, David A.

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

切伦科夫望远镜阵列通过伽马射线传播探测宇宙学和基础物理的灵敏度

• DOI: 10.1088/1475-7516/2021/02/048
• 发表时间: 2021
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Abdalla, H.;Abe, H.;Acero, F.;Acharyya, A.;Adam, R.;Agudo, I.;Aguirre-Santaella, A.;Alfaro, R.;Alfaro, J.;Alispach, C.
• 通讯作者: Alispach, C.

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

A Strong Limit on the Very-high-energy Emission from GRB 150323A

对 GRB 150323A 极高能发射的严格限制

• DOI: 10.3847/1538-4357/aab371
• 发表时间: 2018
• 期刊: The Astrophysical Journal
• 作者: Abeysekara, A. U.;Archer, A.;Benbow, W.;Bird, R.;Brose, R.;Buchovecky, M.;Bugaev, V.;Connolly, M. P.;Cui, W.;Errando, M.
• 通讯作者: Errando, M.