منابع مشابه
GMRT Observations of NGC 3079
We present new observations at three frequencies (326 MHz, 615 MHz, and 1281 MHz) of the radio lobe spiral galaxy, NGC 3079, using the Giant Metrewave Radio Telescope. These observations are consistent with previous data obtained at other telescopes and reveal the structure of the nuclear radio lobes in exquisite detail. In addition, new features are observed, some with HI counterparts, showing...
متن کاملISOCAM view of the starburst galaxies M 82 , NGC 253 , and NGC 1808 ⋆
We present results of mid-infrared λ = 5.0 − 16.5 µm spectrophotometric imaging of the starburst galaxies M 82, NGC 253, and NGC 1808 from the ISOCAM instrument on board the Infrared Space Observatory. The mid-infrared spectra of the three galaxies are very similar in terms of features present. The λ > ∼ 11 µm continuum attributed to very small dust grains (VSGs) exhibits a large spread in inte...
متن کامل3c 129 : the Gmrt Observations
We present radio maps of the head-tail radio galaxy, 3C 129 at 240 and 610 MHz using the Giant Metrewave Radio Telescope. We have studied in detail the morphology of the source and the distribution of spectral index over the object. We find large-scale spectral steepening along the jet away from the core. Using synchrotron spectral ageing theory, we infer the age (time since particle accelerati...
متن کاملROSAT Observations of the Galactic Wind in M 82
We present ROSAT PSPC and HRI observations of the galactic wind from the starburst galaxy M82. X-ray emission from the wind is detected to a distance of ∼ 6 kpc from the plane of the galaxy. Making use of the PSPC's mixture of good spatial and spectral characteristics , we separate point source and diffuse emission, and investigate the spectral variation of the diffuse emission through the wind...
متن کاملLow frequency observations of supernova remnants in M 82
We have used MERLIN at 408 MHz to image the central starburst region of M82 with a resolution of 0.5 arcsec. We detect 20 supernova remnants at this frequency which is a much smaller number than we detect at higher frequencies (50). We attribute this diierence to free-free absorption by ionised gas. We nd that 7 remnants show low-frequency turnovers in their spectra consistent with free-free ab...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2002
ISSN: 0074-1809
DOI: 10.1017/s0074180900169013