A broadband x-ray imaging spectroscopy in the 2030s: the FORCE mission

Mori, Koji; Tsuru, Takeshi Go; Nakazawa, Kazuhiro; Ueda, Y.; Watanabe, Shin; Tanaka, Takaaki; Ishida, M.; Matsumoto, Hironori; Awaki, Hisamitsu; Murakami, Hiroshi; Nobukawa, Masayoshi; Takeda, Ayaki; Fukazawa, Yasushi; Tsunemi, H.; Takahashi, Tadayuki; Hornschemeier, A. E.; Okajima, Takashi; Zhang, William W.; Williams, Brian J.; Venters, Tonia M.; Madsen, K. K.; Yukita, Mihoko; Akamatsu, Hiroki; Bamba, Aya; Enoto, T.; Fujita, Yutaka; Furuzawa, Akihiro; Hagino, K.; Ishimura, Kosei; Itoh, Makoto; Kitayama, Tetsu; Kobayashi, Shōgo; Kohmura, Takayoshi; Kubota, Aya; Mizumoto, Misaki; Mizuno, T.; Nakajima, Hiroshi; Nobukawa, Kumiko K.; Noda, Hirofumi; Odaka, Hirokazu; Ota, Naomi; Sato, Toshiki; Shidatsu, M.; Suzuki, Hiromasa; Takahashi, H.; Tanimoto, A.; Terada, Y.; Terashima, Yuichi; Uchida, Hiroyuki; Uchiyama, Y.; Yamaguchi, Hiroya; Yatsu, Yoichi

doi:10.1117/12.2628772

Cited by 6 publications

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“…As can be seen in this figure and also as pointed out by Celli et al (2020) [25], secondary synchrotron spectra have much shallower cutoffs than 0 -decay gamma-ray spectra from the same parent protons, making this radiation in hard X-rays a powerful tool for PeVatron searches. Sensitive observations of SNRs and nearby clouds are important in this context, and can be carried out with current and future hard X-ray missions such as NuSTAR, FORCE [26], and HEX-P [27].…”

Section: Pevatron Snr Signatures Expected In Hard X-raysmentioning

confidence: 99%

Recent Results on Supernova Remnants at Highest Energies

Tanaka¹

2023

Proceedings of 7th Heidelberg International Symposium on High-Energy Gamma-Ray Astronomy — PoS(Gamma2022)

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Supernova remnants (SNRs) are now established as cosmic particle accelerators through observations of nonthermal emissions from radio to gamma rays in the past decades. In the context of Galactic cosmic-ray origin, one of the key questions is if SNRs are capable of accelerating protons with sufficiently high efficiency to explain the cosmic-ray spectrum below the knee. At least for some SNRs, gamma-ray emissions in the GeV band are solidly attributed to decay of neutral pions, providing long-awaited evidence for proton acceleration. The next and current burning question is if protons are accelerators up to the knee at ∼ PeV. We review recent results with particular emphasis on this topic and also discuss future prospects.

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