Diffuse thermal emission from very hot gas in starburst galaxies: Spatial results
نویسندگان
چکیده
منابع مشابه
Diffuse Thermal Emission from Very Hot Gas in Starburst Galaxies
BeppoSAX observations of the nearby archetypical starburst galaxies NGC253 and M82 are presented. Spectral analysis shows that the 2–10 keV spectra of both galaxies, extracted from the central 4 regions, are best fitted by a thermal emission model with kT ∼ 6–9 keV and metal abundances ∼ 0.1–0.3 solar. The spatial analysis yields clear evidence that this emission is extended in NGC 253, and pos...
متن کاملDiffuse Thermal Emission from Very Hot Gas in Star- Burst Galaxies: Spatial Results
New BeppoSAX observations of the nearby prototypical starburst galaxies NGC 253 and M82 are presented. A companion paper (Cappi et al. 1998) shows that the hard (2-10 keV) spectrum of both galaxies, extracted from the source central regions, is best described by a thermal emission model with kT ∼ 6–9 keV and abundances ∼ 0.1–0.3 solar. The spatial analysis yields clear evidence that this emissi...
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Reanalysis of Einstein IPC data and new observations from the GINGA LAC indicate the presence of extended X-ray emission (10-50 kpc) around the starburst galaxy M82. Here we model this emission by calculating numerical hydrodynamic simulations of the starburst event to much later times and larger scales than previously considered. For our models, we adopt a supernova rate of 0.1 yr, and an exte...
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We have analyzed observations with the Chandra X-ray Observatory of the diffuse emission by hot gas in 7 dwarf starburst galaxies, 6 edge-on starburst galaxies, and 9 Ultra Luminous Infrared Galaxies. These systems cover ranges of ∼ 10 4 in X-ray luminosity and several thousand in star formation rate and K-band luminosity (a proxy for stellar mass). Despite this range in fundamental parameters,...
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ژورنال
عنوان ژورنال: Advances in Space Research
سال: 1999
ISSN: 0273-1177
DOI: 10.1016/s0273-1177(99)00230-6