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Title: SUZAKU SPECTROSCOPY OF VELA SHRAPNEL B

Abstract

We present the X-ray observation of Vela shrapnel B with the X-ray Imaging Spectrometer on board the Suzaku satellite. The shrapnel is one of several ejecta fragmentlike features protruding beyond the primary blast wave shock front of the Vela supernova remnant. The spectrum of shrapnel B is well represented by a single-temperature thin-thermal plasma in a nonequilibrium ionization state. The elemental abundances of O, Ne, and Mg are found to be significantly higher than the solar values, supporting that shrapnel B originates from supernova ejecta. The abundances of O, Ne, and Mg relative to Fe are enhanced above their solar values, while that of Si relative to Fe are at their solar values. This abundance pattern is similar to that in shrapnel D, except that the enhancements of the lighter elements are less prominent, suggesting more extensive mixing with the interstellar medium (ISM) in shrapnel B. The contribution of the ISM is considered to be larger at the trailing region, because the absolute abundances of some elements there are depleted relative to those at the shrapnel's head.

Authors:
 [1]
  1. RIKEN - Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
Publication Date:
OSTI Identifier:
21300690
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 696; Journal Issue: 2; Other Information: DOI: 10.1088/0004-637X/696/2/1548; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; ABUNDANCE; EXPLOSIONS; IONIZATION; PLASMA; SATELLITES; SHOCK WAVES; SPECTROMETERS; SPECTROSCOPY; SUPERNOVA REMNANTS; X RADIATION

Citation Formats

Yamaguchi, H, and Katsuda, S. SUZAKU SPECTROSCOPY OF VELA SHRAPNEL B. United States: N. p., 2009. Web. doi:10.1088/0004-637X/696/2/1548; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Yamaguchi, H, & Katsuda, S. SUZAKU SPECTROSCOPY OF VELA SHRAPNEL B. United States. https://doi.org/10.1088/0004-637X/696/2/1548; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)
Yamaguchi, H, and Katsuda, S. 2009. "SUZAKU SPECTROSCOPY OF VELA SHRAPNEL B". United States. https://doi.org/10.1088/0004-637X/696/2/1548; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@article{osti_21300690,
title = {SUZAKU SPECTROSCOPY OF VELA SHRAPNEL B},
author = {Yamaguchi, H and Katsuda, S.},
abstractNote = {We present the X-ray observation of Vela shrapnel B with the X-ray Imaging Spectrometer on board the Suzaku satellite. The shrapnel is one of several ejecta fragmentlike features protruding beyond the primary blast wave shock front of the Vela supernova remnant. The spectrum of shrapnel B is well represented by a single-temperature thin-thermal plasma in a nonequilibrium ionization state. The elemental abundances of O, Ne, and Mg are found to be significantly higher than the solar values, supporting that shrapnel B originates from supernova ejecta. The abundances of O, Ne, and Mg relative to Fe are enhanced above their solar values, while that of Si relative to Fe are at their solar values. This abundance pattern is similar to that in shrapnel D, except that the enhancements of the lighter elements are less prominent, suggesting more extensive mixing with the interstellar medium (ISM) in shrapnel B. The contribution of the ISM is considered to be larger at the trailing region, because the absolute abundances of some elements there are depleted relative to those at the shrapnel's head.},
doi = {10.1088/0004-637X/696/2/1548; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},
url = {https://www.osti.gov/biblio/21300690}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 696,
place = {United States},
year = {Sun May 10 00:00:00 EDT 2009},
month = {Sun May 10 00:00:00 EDT 2009}
}