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ASTRO-H White Paper - Older Supernova Remnants and Pulsar Wind Nebulae | | K. S. Long
; A. Bamba
; F. Aharonian
; A. Foster
; S. Funk
; J. Hiraga
; J. Hughes
; M. Ishida
; S. Katsuda
; H. Matsumoto
; K. Mori
; H. Nakajima
; T. Nakamori
; M. Ozaki
; S. Safi-Harb
; M. Sawada
; T. Tamagawa
; K. Tamura
; T. Tanaka
; H. Tsunemi
; H. Uchida
; Y. Uchiyama
; S. Yamauchi
; ASTRO-H Science Working Group
; | | Date: |
3 Dec 2014 | | Abstract: | Most supernova remnants (SNRs) are old, in the sense that their structure has
been profoundly modified by their interaction with the surrounding interstellar
medium (ISM). Old SNRs are very heterogenous in terms of their appearance,
reflecting differences in their evolutionary state, the environments in which
SNe explode and in the explosion products. Some old SNRs are seen primarily as
a result of a strong shock wave interacting with the ISM. Others, the so-called
mixed-morphology SNRs, show central concentrations of emission, which may still
show evidence of emission from the ejecta. Yet others, the pulsar wind nebulae
(PWNe), are seen primarily as a result of emission powered by a pulsar; these
SNRs often lack the detectable thermal emission from the primary shock. The
underlying goal in all studies of old SNRs is to understand these differences,
in terms of the SNe that created them, the nature of the ISM into which they
are expanding, and the fundamental physical processes that govern their
evolution. Here we identify three areas of study where ASTRO-H can make
important contributions. These are constraining abundances and physical
processes in mature limb-brightened SNRs, understanding the puzzling nature of
mixed-morphology SNRs, and exploring the nature of PWNe. The Soft X-ray
Spectrometer (SXS) on-board ASTRO-H will, as a result of its high spectral
resolution, be the primary tool for addressing problems associated with old
SNRs, supported by hard X-ray observations with the Hard X-ray Imager (HXI) to
obtain broad band X-ray coverage. | | Source: | arXiv, 1412.1166 | | Services: | Forum | Review | PDF | Favorites | |
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