Gamma Ray Pulsars and Opportunities for the MACE Telescope

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS
Galaxies Pub Date : 2023-08-17 DOI:10.3390/galaxies11040091
A. Pathania, Krishna Kumar Singh, K. Yadav
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引用次数: 0

Abstract

Rapidly rotating neutron stars with very strong surface magnetic fields are observed to emit pulsed emission in the whole range of electromagnetic spectrum from radio to high-energy gamma rays. These so-called pulsars are known for their exceptional rotational stability. The radio emission from pulsars is generally believed to be powered by the rotational energy of neutron stars. More than 3000 pulsars have been currently known from radio observations; however, only about 10% are observed in the high-energy gamma ray band. The Fermi-LAT observations in the energy range above 100 MeV have discovered more than 300 pulsars. However, the origin of high-energy non-thermal radiation from pulsars is not completely understood and remains an active area of research. In this contribution, we report a summary of observational features of the gamma ray pulsars and briefly discuss observability for the MACE gamma ray telescope, which has just started its regular science operation at Hanle in India. Six gamma ray pulsars, other than the well-known Crab and Geminga, are identified as probable candidates for MACE observations.
伽马射线脉冲星与MACE望远镜的机遇
观察到具有非常强表面磁场的快速旋转中子星在从无线电到高能伽马射线的整个电磁光谱范围内发射脉冲发射。这些所谓的脉冲星以其异常的旋转稳定性而闻名。脉冲星的无线电发射通常被认为是由中子星的旋转能量提供动力的。目前,从无线电观测中已知有3000多颗脉冲星;然而,在高能伽马射线带中仅观察到约10%。费米LAT在100MeV以上能量范围内的观测已经发现了300多颗脉冲星。然而,脉冲星高能非热辐射的起源尚不完全清楚,仍然是一个活跃的研究领域。在这篇文章中,我们总结了伽马射线脉冲星的观测特征,并简要讨论了MACE伽马射线望远镜的可观察性,该望远镜刚刚在印度汉勒开始其常规科学运行。除了著名的Crab和Geminga之外,还有六颗伽马射线脉冲星被确定为MACE观测的可能候选者。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Galaxies
Galaxies Physics and Astronomy-Astronomy and Astrophysics
CiteScore
4.90
自引率
12.00%
发文量
100
审稿时长
11 weeks
期刊介绍: Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.
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