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  Murchison Widefield Array and XMM-Newton observations of the Galactic supernova remnant G5.9+3.1

Onić, D., Filipović, M. D., Bojičić, I., Hurley-Walker, N., Arbutina, B., Pannuti, T. G., et al. (2019). Murchison Widefield Array and XMM-Newton observations of the Galactic supernova remnant G5.9+3.1. Astronomy and Astrophysics, 625: A39. doi:10.1051/0004-6361/201834230.

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Murchison Widefield Array and XMM-Newton observations of the Galactic supernova remnant G5.9+3.1.pdf (beliebiger Volltext), 2MB
 
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Onić, D., Autor
Filipović, M. D., Autor
Bojičić, I., Autor
Hurley-Walker, N., Autor
Arbutina, B., Autor
Pannuti, T. G., Autor
Maitra, C.1, Autor           
Urošević, D., Autor
Haberl, F.1, Autor           
Maxted, N., Autor
Wong, G. F., Autor
Rowell, G., Autor
Bell, M. E., Autor
Callingham, J. R., Autor
Dwarakanath, K. S., Autor
For, B.-Q., Autor
Hancock, P. J., Autor
Hindson, L., Autor
Johnston-Hollitt, M., Autor
Kapińska, A. D., Autor
Lenc, E., AutorMcKinley, B., AutorMorgan, J., AutorOffringa, A. R., AutorPorter, L. E., AutorProcopio, P., AutorStaveley-Smith, L., AutorWayth, R. B., AutorWu, C., AutorZheng, Q., Autor mehr..
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Zusammenfassung: Aims. In this paper we discuss the radio continuum and X-ray properties of the so-far poorly studied Galactic supernova remnant (SNR) G5.9 + 3.1.
Methods. We present the radio spectral energy distribution (SED) of the Galactic SNR G5.9 + 3.1 obtained with the Murchison Widefield Array (MWA). Combining these new observations with the surveys at other radio continuum frequencies, we discuss the integrated radio continuum spectrum of this particular remnant. We have also analyzed an archival XMM-Newton observation, which represents the first detection of X-ray emission from this remnant.
Results. The SNR SED is very well explained by a simple power-law relation. The synchrotron radio spectral index of G5.9 + 3.1 is estimated to be 0.42 ± 0.03 and the integrated flux density at 1 GHz to be around 2.7 Jy. Furthermore, we propose that the identified point radio source, located centrally inside the SNR shell, is most probably a compact remnant of the supernova explosion. The shell-like X-ray morphology of G5.9 + 3.1 as revealed by XMM-Newton broadly matches the spatial distribution of the radio emission, where the radio-bright eastern and western rims are also readily detected in the X-ray while the radio-weak northern and southern rims are weak or absent in the X-ray. Extracted MOS1+MOS2+PN spectra from the whole SNR as well as the north, east, and west rims of the SNR are fit successfully with an optically thin thermal plasma model in collisional ionization equilibrium with a column density NH ~ 0.80 × 1022 cm−2 and fitted temperatures spanning the range kT ~ 0.14–0.23 keV for all of the regions. The derived electron number densities ne for the whole SNR and the rims are also roughly comparable (ranging from ~0.20f−1∕2 to ~0.40f −1∕2 cm−3, where f is the volume filling factor). We also estimate the swept-up mass of the X-ray emitting plasma associated with G5.9+3.1 to be ~46f−1∕2 M⊙.

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 Datum: 2019-05-17
 Publikationsstatus: Online veröffentlicht
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 Identifikatoren: DOI: 10.1051/0004-6361/201834230
Anderer: LOCALID: 3066866
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Titel: Astronomy and Astrophysics
  Andere : Astron. Astrophys.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: France : EDP Sciences S A
Seiten: - Band / Heft: 625 Artikelnummer: A39 Start- / Endseite: - Identifikator: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1