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Effects of Neutral Particles on Modified Shocks at Supernova Remnants
Yutaka Ohira, Fumio Takahara
H-alpha emission from supernova remnants (SNRs) implies the existence of neutral hydrogens in the ambient medium. In the precursor of an SNR shock modified by cosmic rays (CRs), up…
Molecular Clouds as a Probe of Cosmic-Ray Acceleration in a Supernova Remnant
Yutaka Fujita, Yutaka Ohira, Shuta J. Tanaka +1
We study cosmic-ray acceleration in a supernova remnant (SNR) and the escape from it. We model nonthermal particle and photon spectra for the hidden SNR in the open cluster Westerl…
Escape-limited Model of Cosmic-ray Acceleration Revisited
Yutaka Ohira, Kohta Murase, Ryo Yamazaki
The spectrum of cosmic rays (CRs) is affected by their escape from an acceleration site. This may have been observed not only in the gamma-ray spectrum of young supernova remnants…
Plasma instabilities as a result of charge exchange in the downstream region of supernova remnant shocks
Yutaka Ohira, Toshio Terasawa, Fumio Takahara
H-alpha emission from supernova remnants (SNRs) implies the existence of neutral hydrogen in the circumstellar medium. Some of the neutral particles penetrating the shock are ioniz…