Doppler-broadened iron x-ray lines from tycho's supernova remnant

Akihiro Furuzawa; Daisuke Ueno; Asami Hayato; Midori Ozawa; Toru Tamagawa; Aya Bamba; John P. Hughes; Hideyo Kunieda; Kazuo Makishima; Stephen S. Holt; Una Hwang; Kenzo Kinugasa; Robert Petre; Keisuke Tamura; Hiroshi Tsunemi; Shigeo Yamauchi

doi:10.1088/0004-637X/693/2/L61

Doppler-broadened iron x-ray lines from tycho's supernova remnant

Akihiro Furuzawa, Daisuke Ueno, Asami Hayato, Midori Ozawa, Toru Tamagawa, Aya Bamba, John P. Hughes, Hideyo Kunieda, Kazuo Makishima, Stephen S. Holt, Una Hwang, Kenzo Kinugasa, Robert Petre, Keisuke Tamura, Hiroshi Tsunemi, Shigeo Yamauchi

School of Arts and Sciences, Physics & Astronomy

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

We use Suzaku observations to measure the spatial variation of the Fe Kα line with radius in the Tycho supernova remnant. The Fe line widths show a significant decrease from a FWHM value of 210 eV at the center to 130 eV at the rim. Over the same radial range the line center energy remains nearly constant. These observations are consistent with a scenario in which the shell of Fe-emitting ejecta in Tycho is expanding at speeds of 2800-3350 km s ^-1. The minimum line width we measure is still a factor of two larger than expected from a single component plasma emission model. If thermal Doppler broadening is the dominant additional source of broadening, we infer an ion temperature of (1-3) × 10¹⁰ K.

Original language	English (US)
Pages (from-to)	L61-L65
Journal	Astrophysical Journal
Volume	693
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/693/2/L61
State	Published - 2009

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

ISM: individual (Tycho, SN 1572)
Supernova remnants
X-rays: ISM

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10.1088/0004-637X/693/2/L61

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@article{0fb32b74c43540b8bdd4e2b47f784585,

title = "Doppler-broadened iron x-ray lines from tycho's supernova remnant",

abstract = "We use Suzaku observations to measure the spatial variation of the Fe Kα line with radius in the Tycho supernova remnant. The Fe line widths show a significant decrease from a FWHM value of 210 eV at the center to 130 eV at the rim. Over the same radial range the line center energy remains nearly constant. These observations are consistent with a scenario in which the shell of Fe-emitting ejecta in Tycho is expanding at speeds of 2800-3350 km s -1. The minimum line width we measure is still a factor of two larger than expected from a single component plasma emission model. If thermal Doppler broadening is the dominant additional source of broadening, we infer an ion temperature of (1-3) × 1010 K.",

keywords = "ISM: individual (Tycho, SN 1572), Supernova remnants, X-rays: ISM",

author = "Akihiro Furuzawa and Daisuke Ueno and Asami Hayato and Midori Ozawa and Toru Tamagawa and Aya Bamba and Hughes, {John P.} and Hideyo Kunieda and Kazuo Makishima and Holt, {Stephen S.} and Una Hwang and Kenzo Kinugasa and Robert Petre and Keisuke Tamura and Hiroshi Tsunemi and Shigeo Yamauchi",

note = "Funding Information: We thank all members of the Suzaku team for their careful work operating the satellite and calibrating the instruments. J.P.H. acknowledges support from NASA grant NNG05GP87G. A.H. and M.O. are financially supported by the Japan Society for the Promotion of Science.",

year = "2009",

doi = "10.1088/0004-637X/693/2/L61",

language = "English (US)",

volume = "693",

pages = "L61--L65",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

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TY - JOUR

T1 - Doppler-broadened iron x-ray lines from tycho's supernova remnant

AU - Furuzawa, Akihiro

AU - Ueno, Daisuke

AU - Hayato, Asami

AU - Ozawa, Midori

AU - Tamagawa, Toru

AU - Bamba, Aya

AU - Hughes, John P.

AU - Kunieda, Hideyo

AU - Makishima, Kazuo

AU - Holt, Stephen S.

AU - Hwang, Una

AU - Kinugasa, Kenzo

AU - Petre, Robert

AU - Tamura, Keisuke

AU - Tsunemi, Hiroshi

AU - Yamauchi, Shigeo

N1 - Funding Information: We thank all members of the Suzaku team for their careful work operating the satellite and calibrating the instruments. J.P.H. acknowledges support from NASA grant NNG05GP87G. A.H. and M.O. are financially supported by the Japan Society for the Promotion of Science.

PY - 2009

Y1 - 2009

N2 - We use Suzaku observations to measure the spatial variation of the Fe Kα line with radius in the Tycho supernova remnant. The Fe line widths show a significant decrease from a FWHM value of 210 eV at the center to 130 eV at the rim. Over the same radial range the line center energy remains nearly constant. These observations are consistent with a scenario in which the shell of Fe-emitting ejecta in Tycho is expanding at speeds of 2800-3350 km s -1. The minimum line width we measure is still a factor of two larger than expected from a single component plasma emission model. If thermal Doppler broadening is the dominant additional source of broadening, we infer an ion temperature of (1-3) × 1010 K.

AB - We use Suzaku observations to measure the spatial variation of the Fe Kα line with radius in the Tycho supernova remnant. The Fe line widths show a significant decrease from a FWHM value of 210 eV at the center to 130 eV at the rim. Over the same radial range the line center energy remains nearly constant. These observations are consistent with a scenario in which the shell of Fe-emitting ejecta in Tycho is expanding at speeds of 2800-3350 km s -1. The minimum line width we measure is still a factor of two larger than expected from a single component plasma emission model. If thermal Doppler broadening is the dominant additional source of broadening, we infer an ion temperature of (1-3) × 1010 K.

KW - ISM: individual (Tycho, SN 1572)

KW - Supernova remnants

KW - X-rays: ISM

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U2 - 10.1088/0004-637X/693/2/L61

DO - 10.1088/0004-637X/693/2/L61

M3 - Article

AN - SCOPUS:64849085673

SN - 0004-637X

VL - 693

SP - L61-L65

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Doppler-broadened iron x-ray lines from tycho's supernova remnant

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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