X-ray sources in the starburst spiral galaxy M 83

Soria, Roberto; Wu, Kinwah

doi:10.1051/0004-6361:20020026

Cited by 56 publications

(88 citation statements)

References 20 publications

(29 reference statements)

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“…The obtained temperatures are 0.3-0.6 keV and 0.9-1.5 keV (see Table 5). The lower temperature is consistent with what Soria & Wu (2002) found (kT = 0.6 keV) in the nuclear 16″ starburst region using Chandra. We note that the second temperature is less constrained for the Chandra spectrum due to the poor S/N compared to the XMM-Newton data.…”

Section: Nucleussupporting

confidence: 91%

A HARD X-RAY STUDY OF THE NORMAL STAR-FORMING GALAXY M83 WITH NuSTAR

Yukita

Hornschemeier

Lehmer

et al. 2016

ApJ

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We present the results from sensitive, multi-epoch NuSTAR observations of the late-type star-forming galaxy M83 (d = 4.6 Mpc). This is the first investigation to spatially resolve the hard (E 10 > keV) X-ray emission of this galaxy. The nuclear region and ∼20 off-nuclear point sources, including a previously discovered ultraluminous X-ray source, are detected in our NuSTAR observations. The X-ray hardnesses and luminosities of the majority of the point sources are consistent with hard X-ray sources resolved in the starburst galaxy NGC 253. We infer that the hard X-ray emission is most likely dominated by intermediate accretion state black hole binaries and neutron star low-mass X-ray binaries (Z-sources). We construct the X-ray binary luminosity function (XLF) in the NuSTAR band for an extragalactic environment for the first time. The M83 XLF has a steeper XLF than the X-ray binary XLF in NGC 253, which is consistent with previous measurements by Chandra at softer X-ray energies. The NuSTAR integrated galaxy spectrum of M83 drops quickly above 10 keV, which is also seen in the starburst galaxies NGC 253, NGC 3310, and NGC 3256. The NuSTAR observations constrain any active galactic nucleus (AGN) to be either highly obscured or to have an extremely low luminosity of 10 38 erg s −1 (10-30 keV), implying that it is emitting at a very low Eddington ratio. An X-ray point source that is consistent with the location of the nuclear star cluster with an X-ray luminosity of a few times 10 38 erg s −1 may be a low-luminosity AGN but is more consistent with being an X-ray binary.

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Section: Nucleussupporting

confidence: 91%

A HARD X-RAY STUDY OF THE NORMAL STAR-FORMING GALAXY M83 WITH NuSTAR

Yukita

Hornschemeier

Lehmer

et al. 2016

ApJ

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“…The large uncertainties in the spectral index measurements stem from the faintness of the source. Soria & Wu (2003) consistent with SNR emission using the classification scheme in Prestwich et al (2003). Our radio measurements appear to confirm the identification of this source as an SNR.…”

Section: Supernova Remnantssupporting

confidence: 82%

“…In our search we identified four sources coincident with optical SNRs. Three of these radio sources had corresponding X-ray sources as reported in Soria & Wu (2002. The SNR counterparts are listed in Table 4, and the positions are indicated in Figure 1.…”

Section: Supernova Remnantsmentioning

confidence: 99%

A Study of Compact Radio Sources in Nearby Face-on Spiral Galaxies. I. Long-Term Evolution of M83

Maddox¹,

Cowan²,

Kilgard³

et al. 2006

Astron J

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We present analyses of deep radio observations of M83 taken with the Very Large Array spanning 15 yr, including never-before-published observations from 1990 and 1998. We report on the evolution of 55 individual point sources, which include four of the six known historical supernovae in this galaxy. A total of 10 sources have X-ray counterparts from a Chandra survey. Each of these sources show nonthermal spectral indices, and most appear to be X-ray supernova remnants. Comparing the radio source list to surveys in the optical and X-ray, we identify three optical/ X-ray supernova remnants. Nearly half of the detected radio sources in these observations are coincident with known H ii regions lying in the spiral arm structures of the galaxy. We also report on changes in emission from the complex nuclear region, which has shown variability at 20 cm wavelengths. We confirm that the peak radio emission from the nucleus is not coincident with the known optical center. One lesser nuclear peak is consistent with the optical/IR nucleus. Previous dynamical studies of a ''dark'' nuclear mass indicate a possible match to other radio nuclear emission regions in M83.

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“…M 51 (Terashima & Wilson 2002), M 83 (Soria & Wu 2002)). Two of the galaxies in our sample -Circinus and NGC 3256 -are located at a Galactic latitude of |b II | < 20.…”

Section: (Left Panel)mentioning

confidence: 99%