Search for gamma-ray spectral lines from dark matter annihilation in dwarf galaxies with the High-Altitude Water Cherenkov observatory
Search for gamma-ray spectral lines from dark matter annihilation in dwarf galaxies with the High-Altitude Water Cherenkov observatory
复制标题
DOI：
10.1103/physrevd.101.103001
复制
发表时间：
2019-12
影响因子：
5
通讯作者：
A. Albert;R. Alfaro;C. Álvarez;J. C. Arteaga-Velázquez;K. Arunbabu;D. Avila Rojas;H. A. Ayala Solares;E. Belmont-Moreno;S. BenZvi;C. Brisbois;K. Caballero-Mora;T. Capistrán;A. Carramiñana;S. Casanova;U. Cotti;J. Cotzomi;S. Coutiño de León;E. de la Fuente;S. Dichiara;B. Dingus;M. DuVernois;J. C. Díaz-Vélez;K. Engel;C. Espinoza;N. Fraija;A. Galván-Gámez;J. García-González;F. Garfias;M. M. González-M. ;J. Goodman;J. P. Harding;S. Hernández;B. Hona;D. Huang;P. Huentemeyer;F. Hueyotl-Zahuantitla;A. Iriarte;V. Joshi;A. Lara;H. León Vargas;J. Linnemann;A. Longinotti;G. Luis-Raya;J. Lundeen;K. Malone;S. Marinelli;O. Martinez;I. Martinez-Castellanos;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;A. Peisker;E. Pérez-Pérez-E.-Pérez-Pérez-1431205495;C. Rho;D. Rosa-González;M. Rosenberg;H. Salazar;F. Salesa Greus;A. Sandoval;M. Schneider;R. Springer;E. Tabachnick;O. Tibolla;K. Tollefson;I. Torres;R. Torres-Escobedo;T. Weisgarber;J. Wood;A. Zepeda;H. Zhou;C. de León
中科院分区：
文献类型：
--
作者：
A. Albert;R. Alfaro;C. Álvarez;J. C. Arteaga-Velázquez;K. Arunbabu;D. Avila Rojas;H. A. Ayala Solares;E. Belmont-Moreno;S. BenZvi;C. Brisbois;K. Caballero-Mora;T. Capistrán;A. Carramiñana;S. Casanova;U. Cotti;J. Cotzomi;S. Coutiño de León;E. de la Fuente;S. Dichiara;B. Dingus;M. DuVernois;J. C. Díaz-Vélez;K. Engel;C. Espinoza;N. Fraija;A. Galván-Gámez;J. García-González;F. Garfias;M. M. González-M. ;J. Goodman;J. P. Harding;S. Hernández;B. Hona;D. Huang;P. Huentemeyer;F. Hueyotl-Zahuantitla;A. Iriarte;V. Joshi;A. Lara;H. León Vargas;J. Linnemann;A. Longinotti;G. Luis-Raya;J. Lundeen;K. Malone;S. Marinelli;O. Martinez;I. Martinez-Castellanos;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;A. Peisker;E. Pérez-Pérez-E.-Pérez-Pérez-1431205495;C. Rho;D. Rosa-González;M. Rosenberg;H. Salazar;F. Salesa Greus;A. Sandoval;M. Schneider;R. Springer;E. Tabachnick;O. Tibolla;K. Tollefson;I. Torres;R. Torres-Escobedo;T. Weisgarber;J. Wood;A. Zepeda;H. Zhou;C. de León
局部矮球状星系（dSphs）是暗物质主导的星系附近，使它们成为寻找粒子暗物质相互作用产生的伽马射线的绝佳目标。如果暗物质湮灭或直接衰变成两条伽马射线（或一条伽马射线和一条中性粒子），就会产生单色谱线。在TeV能量下，预计不会有其他过程产生谱线，这使得它成为一个非常干净的间接暗物质搜索通道。随着逐事件能量重建的发展，我们现在可以利用高海拔水切伦科夫（HAWC）天文台搜索光谱线。HAWC是一种位于墨西哥中部的宽视场测量仪器，可观测100 TeV的伽马射线。在这项工作中，我们展示了最近利用1038天的HAWC数据对当地暗物质主导的矮星系的光谱线的搜索结果。我们还提出了在以前的出版物中报道的几个连续通道的最新限制。我们的伽玛射线谱线极限是迄今为止获得的最严格的限制，从20 TeV到100 TeV。
Local dwarf spheroidal galaxies (dSphs) are nearby dark-matter dominated systems, making them excellent targets for searching for gamma rays from particle dark matter interactions. If dark matter annihilates or decays directly into two gamma rays (or a gamma ray and a neutral particle), a monochromatic spectral line is created. At TeV energies, no other processes are expected to produce spectral lines, making this a very clean indirect dark matter search channel. With the development of event-by-event energy reconstruction, we can now search for spectral lines with the High Altitude Water Cherenkov (HAWC) Observatory. HAWC is a wide field of view survey instrument located in central Mexico that observes gamma rays from100 TeV. In this work we present results from a recent search for spectral lines from local, dark matter dominated dwarf galaxies using 1038 days of HAWC data. We also present updated limits on several continuum channels that were reported in a previous publication. Our gamma-ray spectral line limits are the most constraining obtained so far from 20 TeV to 100 TeV.