Evidence that Ultra-high-energy Gamma Rays Are a Universal Feature near Powerful Pulsars
Evidence that Ultra-high-energy Gamma Rays Are a Universal Feature near Powerful Pulsars
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DOI：
10.3847/2041-8213/abf4dc
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发表时间：
2021-01
期刊：
影响因子：
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通讯作者：
Hawc Collaboration;A. Albert;R. Alfaro;C. Álvarez;J. Álvarez;J. R. A. Camacho;J. C. Arteaga-Velázquez;K. Arunbabu;D. Rojas;H. Solares;V. Baghmanyan;E. Belmont-Moreno;S. BenZvi;C. Brisbois;K. Caballero-Mora;T. Capistrán;A. Carramiñana;S. Casanova;U. Cotti;J. Cotzomi;S. Le'on;E. D. L. Fuente;C. D. Le'on;R. D. Hernandez;B. Dingus;M. DuVernois;M. Durocher;J. C. Díaz-Vélez;R. Ellsworth;K. Engel;C. Espinoza;K. Fan;M. F. Alonso;N. Fraija;A. Galv'an-G'amez;J. García-González;F. Garfias;G. Giacinti;M. González;J. Goodman;J. P. Harding;S. Hernández;B. Hona;D. Huang;F. Hueyotl-Zahuantitla;P. Huntemeyer;A. Iriarte;A. Jardin-Blicq;V. Joshi;D. Kieda;A. Lara;W. Lee;J. Lee;H. L. Vargas;J. Linnemann;A. Longinotti;G. Luis-Raya;J. Lundeen;K. Malone;V. Marandon;O. Martinez;J. Martínez-Castro;J. Matthews;P. Miranda-Romagnoli;J. Morales-Soto;E. Moreno;M. Mostafá;A. Nayerhoda;L. Nellen;M. Newbold;M. Nisa;R. Noriega-Papaqui;L. Olivera-Nieto;N. Omodei;A. Peisker;Y. Araujo;E. Pérez-Pérez-E.-Pérez-Pérez-1431205495;C. Rho;Y. J. Roh;D. Rosa-González;E. Ruiz-Velasco;H. Salazar;F. Greus;A. Sandoval;M. Schneider;H. Schoorlemmer;J. Serna-Franco;A. Smith;R. Springer;P. Surajbali;M. Tanner;K. Tollefson;I. Torres;R. Torres-Escobedo;R. Turner;F. Ureña-Mena;L. Villaseñor;T. Weisgarber;E. Willox;H. Zhou
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文献类型：
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作者：
Hawc Collaboration;A. Albert;R. Alfaro;C. Álvarez;J. Álvarez;J. R. A. Camacho;J. C. Arteaga-Velázquez;K. Arunbabu;D. Rojas;H. Solares;V. Baghmanyan;E. Belmont-Moreno;S. BenZvi;C. Brisbois;K. Caballero-Mora;T. Capistrán;A. Carramiñana;S. Casanova;U. Cotti;J. Cotzomi;S. Le'on;E. D. L. Fuente;C. D. Le'on;R. D. Hernandez;B. Dingus;M. DuVernois;M. Durocher;J. C. Díaz-Vélez;R. Ellsworth;K. Engel;C. Espinoza;K. Fan;M. F. Alonso;N. Fraija;A. Galv'an-G'amez;J. García-González;F. Garfias;G. Giacinti;M. González;J. Goodman;J. P. Harding;S. Hernández;B. Hona;D. Huang;F. Hueyotl-Zahuantitla;P. Huntemeyer;A. Iriarte;A. Jardin-Blicq;V. Joshi;D. Kieda;A. Lara;W. Lee;J. Lee;H. L. Vargas;J. Linnemann;A. Longinotti;G. Luis-Raya;J. Lundeen;K. Malone;V. Marandon;O. Martinez;J. Martínez-Castro;J. Matthews;P. Miranda-Romagnoli;J. Morales-Soto;E. Moreno;M. Mostafá;A. Nayerhoda;L. Nellen;M. Newbold;M. Nisa;R. Noriega-Papaqui;L. Olivera-Nieto;N. Omodei;A. Peisker;Y. Araujo;E. Pérez-Pérez-E.-Pérez-Pérez-1431205495;C. Rho;Y. J. Roh;D. Rosa-González;E. Ruiz-Velasco;H. Salazar;F. Greus;A. Sandoval;M. Schneider;H. Schoorlemmer;J. Serna-Franco;A. Smith;R. Springer;P. Surajbali;M. Tanner;K. Tollefson;I. Torres;R. Torres-Escobedo;R. Turner;F. Ureña-Mena;L. Villaseñor;T. Weisgarber;E. Willox;H. Zhou
已知最高能量的伽马射线源都位于极强的伽玛射线星的0.5 °范围内。这就提出了一个问题，即超高能（UHE; >56 TeV）伽马射线发射是否是一个普遍的特征，预计在具有高自旋下降功率的恒星附近。使用四年的数据从高海拔水切伦科夫伽马射线天文台，我们提出了一个联合的可能性分析10个非常强大的恒星，以寻找阈下UHE伽马射线发射与这些位置。我们报告了一个显著的检测（>3σ），表明UHE伽马射线发射是一个强大的恒星的一般特征。我们讨论的伽马射线的发射机制和这一结果的影响。个体环境，如周围区域的磁场和粒子密度，似乎对发射量起作用。
The highest-energy known gamma-ray sources are all located within 0.°5 of extremely powerful pulsars. This raises the question of whether ultra-high-energy (UHE; >56 TeV) gamma-ray emission is a universal feature expected near pulsars with a high spin-down power. Using four years of data from the High Altitude Water Cherenkov Gamma-Ray Observatory, we present a joint-likelihood analysis of 10 extremely powerful pulsars to search for subthreshold UHE gamma-ray emission correlated with these locations. We report a significant detection (>3σ), indicating that UHE gamma-ray emission is a generic feature of powerful pulsars. We discuss the emission mechanisms of the gamma rays and the implications of this result. The individual environment, such as the magnetic field and particle density in the surrounding area, appears to play a role in the amount of emission.