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Title: DISCOVERY OF X-RAY EMISSION FROM AND DISTANCE TO THE SUPERNOVA REMNANT G84.2-0.8

Abstract

We analyze X-ray and radio observations of the supernova remnant G84.2-0.8. 1420 MHz atomic hydrogen (H I) line and radio continuum data yield H I absorption spectra and a new H I absorption distance of 5.8-6.2 kpc. Archival X-ray observations from ROSAT and Chandra which cover the area including G84.2-0.8 are analyzed to show extended X-ray emission from G84.2-0.8. Fits to X-ray spectra from Chandra, with the new H I distance of 5.8-6.2 kpc, are used to determine the Sedov parameters of the supernova remnant. G84.2-0.8 is large (16-18 pc radius), middle aged ({approx}9000 yr), expanding in low-density interstellar medium (0.02 cm{sup -3}), and consistent with a low explosion energy (0.8-6.5 Multiplication-Sign 10{sup 50} erg).

Authors:
Publication Date:
OSTI Identifier:
22086354
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 760; Journal Issue: 1; Other Information: 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; ABSORPTION SPECTRA; ASTROPHYSICS; COSMIC X-RAY SOURCES; DENSITY; DISTANCE; GAMMA ASTRONOMY; HYDROGEN; INTERSTELLAR SPACE; MHZ RANGE; PHOTON EMISSION; RADIOASTRONOMY; SUPERNOVA REMNANTS; X RADIATION; X-RAY SPECTRA

Citation Formats

Leahy, Denis A, and Green, Kaylie S., E-mail: leahy@ucalgary.ca, E-mail: ksgreen@ucalgary.ca. DISCOVERY OF X-RAY EMISSION FROM AND DISTANCE TO THE SUPERNOVA REMNANT G84.2-0.8. United States: N. p., 2012. Web. doi:10.1088/0004-637X/760/1/25.
Leahy, Denis A, & Green, Kaylie S., E-mail: leahy@ucalgary.ca, E-mail: ksgreen@ucalgary.ca. DISCOVERY OF X-RAY EMISSION FROM AND DISTANCE TO THE SUPERNOVA REMNANT G84.2-0.8. United States. https://doi.org/10.1088/0004-637X/760/1/25
Leahy, Denis A, and Green, Kaylie S., E-mail: leahy@ucalgary.ca, E-mail: ksgreen@ucalgary.ca. 2012. "DISCOVERY OF X-RAY EMISSION FROM AND DISTANCE TO THE SUPERNOVA REMNANT G84.2-0.8". United States. https://doi.org/10.1088/0004-637X/760/1/25.
@article{osti_22086354,
title = {DISCOVERY OF X-RAY EMISSION FROM AND DISTANCE TO THE SUPERNOVA REMNANT G84.2-0.8},
author = {Leahy, Denis A and Green, Kaylie S., E-mail: leahy@ucalgary.ca, E-mail: ksgreen@ucalgary.ca},
abstractNote = {We analyze X-ray and radio observations of the supernova remnant G84.2-0.8. 1420 MHz atomic hydrogen (H I) line and radio continuum data yield H I absorption spectra and a new H I absorption distance of 5.8-6.2 kpc. Archival X-ray observations from ROSAT and Chandra which cover the area including G84.2-0.8 are analyzed to show extended X-ray emission from G84.2-0.8. Fits to X-ray spectra from Chandra, with the new H I distance of 5.8-6.2 kpc, are used to determine the Sedov parameters of the supernova remnant. G84.2-0.8 is large (16-18 pc radius), middle aged ({approx}9000 yr), expanding in low-density interstellar medium (0.02 cm{sup -3}), and consistent with a low explosion energy (0.8-6.5 Multiplication-Sign 10{sup 50} erg).},
doi = {10.1088/0004-637X/760/1/25},
url = {https://www.osti.gov/biblio/22086354}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 760,
place = {United States},
year = {Tue Nov 20 00:00:00 EST 2012},
month = {Tue Nov 20 00:00:00 EST 2012}
}