Discovery of fast-moving X-ray-emitting ejecta knots in the oxygen-rich supernova remnant puppis A

S. Katsuda, K. Mori, H. Tsunemi, S. Park, U. Hwang, D. N. Burrows, J. P. Hughes, P. O. Slane

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We report on the discovery of fast-moving X-ray-emitting ejecta knots in the Galactic oxygen-rich supernova remnant Puppis A from XMM-Newton observations. We find an X-ray knotty feature positionally coincident with an O-rich fast-moving optical filament with blueshifted line emission located in the northeast of Puppis A. We extract spectra from northern and southern regions of the feature. Applying a one-component nonequilibrium ionization model for the two spectra, we find high metal abundances relative to the solar values in both spectra. This fact clearly shows that the feature originates from metal-rich ejecta. In addition, we find that line emission in the two regions is blueshifted. The Doppler velocities derived in the two regions are different with each other, suggesting that the knotty feature consists of two knots that are close to each other along the line of sight. Since fast-moving O-rich optical knots/filaments are believed to be recoiled metal-rich ejecta, expelled to the opposite direction against the high-velocity central compact object, we propose that the ejecta knots disclosed here are also part of the recoiled material.

Original languageEnglish (US)
Pages (from-to)297-302
Number of pages6
JournalAstrophysical Journal
Volume678
Issue number1
DOIs
StatePublished - May 1 2008

Fingerprint

supernova remnants
ejecta
oxygen
metal
filaments
x rays
nonequilibrium ionization
metals
XMM-Newton telescope
newton
line of sight
relative abundance
ionization

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Katsuda, S. ; Mori, K. ; Tsunemi, H. ; Park, S. ; Hwang, U. ; Burrows, D. N. ; Hughes, J. P. ; Slane, P. O. / Discovery of fast-moving X-ray-emitting ejecta knots in the oxygen-rich supernova remnant puppis A. In: Astrophysical Journal. 2008 ; Vol. 678, No. 1. pp. 297-302.
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Katsuda, S, Mori, K, Tsunemi, H, Park, S, Hwang, U, Burrows, DN, Hughes, JP & Slane, PO 2008, 'Discovery of fast-moving X-ray-emitting ejecta knots in the oxygen-rich supernova remnant puppis A', Astrophysical Journal, vol. 678, no. 1, pp. 297-302. https://doi.org/10.1086/586891

Discovery of fast-moving X-ray-emitting ejecta knots in the oxygen-rich supernova remnant puppis A. / Katsuda, S.; Mori, K.; Tsunemi, H.; Park, S.; Hwang, U.; Burrows, D. N.; Hughes, J. P.; Slane, P. O.

In: Astrophysical Journal, Vol. 678, No. 1, 01.05.2008, p. 297-302.

Research output: Contribution to journalArticle

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AU - Burrows, D. N.

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N2 - We report on the discovery of fast-moving X-ray-emitting ejecta knots in the Galactic oxygen-rich supernova remnant Puppis A from XMM-Newton observations. We find an X-ray knotty feature positionally coincident with an O-rich fast-moving optical filament with blueshifted line emission located in the northeast of Puppis A. We extract spectra from northern and southern regions of the feature. Applying a one-component nonequilibrium ionization model for the two spectra, we find high metal abundances relative to the solar values in both spectra. This fact clearly shows that the feature originates from metal-rich ejecta. In addition, we find that line emission in the two regions is blueshifted. The Doppler velocities derived in the two regions are different with each other, suggesting that the knotty feature consists of two knots that are close to each other along the line of sight. Since fast-moving O-rich optical knots/filaments are believed to be recoiled metal-rich ejecta, expelled to the opposite direction against the high-velocity central compact object, we propose that the ejecta knots disclosed here are also part of the recoiled material.

AB - We report on the discovery of fast-moving X-ray-emitting ejecta knots in the Galactic oxygen-rich supernova remnant Puppis A from XMM-Newton observations. We find an X-ray knotty feature positionally coincident with an O-rich fast-moving optical filament with blueshifted line emission located in the northeast of Puppis A. We extract spectra from northern and southern regions of the feature. Applying a one-component nonequilibrium ionization model for the two spectra, we find high metal abundances relative to the solar values in both spectra. This fact clearly shows that the feature originates from metal-rich ejecta. In addition, we find that line emission in the two regions is blueshifted. The Doppler velocities derived in the two regions are different with each other, suggesting that the knotty feature consists of two knots that are close to each other along the line of sight. Since fast-moving O-rich optical knots/filaments are believed to be recoiled metal-rich ejecta, expelled to the opposite direction against the high-velocity central compact object, we propose that the ejecta knots disclosed here are also part of the recoiled material.

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