期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 911, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/abf4dc
关键词
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资金
- US National Science Foundation (NSF)
- US Department of Energy Office of High-Energy Physics
- Laboratory Directed Research and Development (LDRD) program of Los Alamos National Laboratory
- Consejo Nacional de Ciencia y Tecnologia (CONACyT), Mexico [271051, 232656, 260378, 179588, 254964, 258865, 243290, 132197, A1-S-46288, A1-S-22784]
- DGAPA-UNAM [IG101320, IN111315, IN111716-3, IN111419, IA102019, IN110621]
- VIEP-BUAP
- University of Wisconsin Alumni Research Foundation
- Polish Science Centre grant [DEC-2017/27/B/ST9/02272]
- Coordinacion de la Investigacion Cientifica de la Universidad Michoacana
- Royal Society-Newton Advanced Fellowship [180385]
- Generalitat Valenciana [CIDEGENT/2018/034]
- Chulalongkorn Universitys CUniverse (CUAASC) grant
- Institute of Geophysics, Planetary Physics, and Signatures at Los Alamos National Laboratory
- catedras [873, 1563, 341, 323]
The study found that ultra-high-energy gamma-ray emission is a common feature near extremely powerful pulsars, which is influenced by the individual environment surrounding the pulsars.
The highest-energy known gamma-ray sources are all located within 0.degrees 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 (>3 sigma), 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.
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