학술논문
The High Energy X-ray Probe (HEX-P): Magnetars and Other Isolated Neutron Stars
Document Type
Working Paper
Author
Alford, J. A. J.; Younes, G. A.; Wadiasingh, Z.; Abdelmaguid, M.; An, H.; Bachetti, M.; Baring, M.; Beloborodov, A.; Chen, A. Y.; Enoto, T.; García, J. A.; Gelfand, J. D.; Gotthelf, E. V.; Harding, A.; Hu, C. -P.; Jaodand, A. D.; Kaspi, V.; Kim, C.; Kouveliotou, C.; Kuiper, L.; Mori, K.; Nynka, M.; Park, J.; Stern, D.; Valverde, J.; Walton, D.
Source
Subject
Language
Abstract
The hard X-ray emission from magnetars and other isolated neutron stars remains under-explored. An instrument with higher sensitivity to hard X-rays is critical to understanding the physics of neutron star magnetospheres and also the relationship between magnetars and Fast Radio Bursts (FRBs). High sensitivity to hard X-rays is required to determine the number of magnetars with hard X-ray tails, and to track transient non-thermal emission from these sources for years post-outburst. This sensitivity would also enable previously impossible studies of the faint non-thermal emission from middle-aged rotation-powered pulsars (RPPs), and detailed phase-resolved spectroscopic studies of younger, bright RPPs. The High Energy X-ray Probe (HEX-P) is a probe-class mission concept that will combine high spatial resolution X-ray imaging ($<5$ arcsec half-power diameter (HPD) at 0.2--25 keV) and broad spectral coverage (0.2--80 keV) with a sensitivity superior to current facilities (including XMM-Newton and NuSTAR). HEX-P has the required timing resolution to perform follow-up observations of sources identified by other facilities and positively identify candidate pulsating neutron stars. Here we discuss how HEX-P is ideally suited to address important questions about the physics of magnetars and other isolated neutron stars.
Comment: 22 pages, 8 figures, submitted to Frontiers
Comment: 22 pages, 8 figures, submitted to Frontiers