The X-ray emission of the supernova remnant W49B: Indications of a jet-like explosion

M. Miceli, A. Decourchelle, J. Ballet, F. Bocchino, John Hughes, U. Hwang, R. Petre

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report on an XMM-Newton EPIC observation of the galactic supernova remnant W49B, which, on the basis of previous Chandra observations, has been supposed to be the first remnant of a gamma-ray burst discovered in our galaxy. We performed a spatially resolved spectral analysis, which revealed oversolar abundances of Si, S, Ar, Ca, and Fe. Moreover, a high overabundance of Ni is required in the bright central elongated region. Our results support a scenario where the remnant was generated by an asymmetric bipolar explosion where the eastern jet is hotter and more Fe-rich than the western one. An alternative interpretation which associates the X-ray emission with spherically symmetric ejecta interacting with a dense belt of ambient inhomogeneous material can also explain the X-ray emission morphology. We perform estimates of the mass and energy of the remnant and we compare the observed abundances with the yields produced in hypernovae and supernovae nucleosynthesis models. Our results support the aspherical explosion scenario, but the claim for an association of W49B with an hypernova (and a gamma-ray burst) is not directly supported by any observational evidence.

Original languageEnglish (US)
Title of host publicationTHE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS
Pages129-134
Number of pages6
DOIs
StatePublished - Oct 24 2007
EventTHE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS - Cefalu, Sicily, Italy
Duration: Jun 11 2006Jun 24 2006

Publication series

NameAIP Conference Proceedings
Volume924
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherTHE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS
CountryItaly
CityCefalu, Sicily
Period6/11/066/24/06

Fingerprint

supernova remnants
gamma ray bursts
explosions
indication
jet flow
ejecta
XMM-Newton telescope
nuclear fusion
newton
spectrum analysis
supernovae
x rays
galaxies
estimates
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • ISM: individual objects: W49B
  • ISM: supernovae remnants
  • X-rays: ISM

Cite this

Miceli, M., Decourchelle, A., Ballet, J., Bocchino, F., Hughes, J., Hwang, U., & Petre, R. (2007). The X-ray emission of the supernova remnant W49B: Indications of a jet-like explosion. In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS (pp. 129-134). (AIP Conference Proceedings; Vol. 924). https://doi.org/10.1063/1.2774850
Miceli, M. ; Decourchelle, A. ; Ballet, J. ; Bocchino, F. ; Hughes, John ; Hwang, U. ; Petre, R. / The X-ray emission of the supernova remnant W49B : Indications of a jet-like explosion. THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. 2007. pp. 129-134 (AIP Conference Proceedings).
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Miceli, M, Decourchelle, A, Ballet, J, Bocchino, F, Hughes, J, Hwang, U & Petre, R 2007, The X-ray emission of the supernova remnant W49B: Indications of a jet-like explosion. in THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. AIP Conference Proceedings, vol. 924, pp. 129-134, THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS, Cefalu, Sicily, Italy, 6/11/06. https://doi.org/10.1063/1.2774850

The X-ray emission of the supernova remnant W49B : Indications of a jet-like explosion. / Miceli, M.; Decourchelle, A.; Ballet, J.; Bocchino, F.; Hughes, John; Hwang, U.; Petre, R.

THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. 2007. p. 129-134 (AIP Conference Proceedings; Vol. 924).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Miceli, M.

AU - Decourchelle, A.

AU - Ballet, J.

AU - Bocchino, F.

AU - Hughes, John

AU - Hwang, U.

AU - Petre, R.

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N2 - We report on an XMM-Newton EPIC observation of the galactic supernova remnant W49B, which, on the basis of previous Chandra observations, has been supposed to be the first remnant of a gamma-ray burst discovered in our galaxy. We performed a spatially resolved spectral analysis, which revealed oversolar abundances of Si, S, Ar, Ca, and Fe. Moreover, a high overabundance of Ni is required in the bright central elongated region. Our results support a scenario where the remnant was generated by an asymmetric bipolar explosion where the eastern jet is hotter and more Fe-rich than the western one. An alternative interpretation which associates the X-ray emission with spherically symmetric ejecta interacting with a dense belt of ambient inhomogeneous material can also explain the X-ray emission morphology. We perform estimates of the mass and energy of the remnant and we compare the observed abundances with the yields produced in hypernovae and supernovae nucleosynthesis models. Our results support the aspherical explosion scenario, but the claim for an association of W49B with an hypernova (and a gamma-ray burst) is not directly supported by any observational evidence.

AB - We report on an XMM-Newton EPIC observation of the galactic supernova remnant W49B, which, on the basis of previous Chandra observations, has been supposed to be the first remnant of a gamma-ray burst discovered in our galaxy. We performed a spatially resolved spectral analysis, which revealed oversolar abundances of Si, S, Ar, Ca, and Fe. Moreover, a high overabundance of Ni is required in the bright central elongated region. Our results support a scenario where the remnant was generated by an asymmetric bipolar explosion where the eastern jet is hotter and more Fe-rich than the western one. An alternative interpretation which associates the X-ray emission with spherically symmetric ejecta interacting with a dense belt of ambient inhomogeneous material can also explain the X-ray emission morphology. We perform estimates of the mass and energy of the remnant and we compare the observed abundances with the yields produced in hypernovae and supernovae nucleosynthesis models. Our results support the aspherical explosion scenario, but the claim for an association of W49B with an hypernova (and a gamma-ray burst) is not directly supported by any observational evidence.

KW - ISM: individual objects: W49B

KW - ISM: supernovae remnants

KW - X-rays: ISM

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Miceli M, Decourchelle A, Ballet J, Bocchino F, Hughes J, Hwang U et al. The X-ray emission of the supernova remnant W49B: Indications of a jet-like explosion. In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. 2007. p. 129-134. (AIP Conference Proceedings). https://doi.org/10.1063/1.2774850