Low-frequency observations of supernova remnants in M82 | Zendy

K. A. Wills | Zendy; A. Pedlar | Zendy; T. W. B. Muxlow | Zendy; P. N. Wilkinson | Zendy

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Low-frequency observations of supernova remnants in M82

Author(s) -

K. A. Wills,

A. Pedlar,

T. W. B. Muxlow,

P. N. Wilkinson

Publication year - 1997

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/291.3.517

Subject(s) - physics , astrophysics , supernova , spectral line , stars , spectral index , absorption (acoustics) , ionization , h ii region , cluster (spacecraft) , astronomy , galaxy , supernova remnant , star formation , ion , optics , quantum mechanics , computer science , programming language

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 difference to free-free absorption by ionized gas. We find that seven remnants show low-frequency turnovers in their spectra consistent with free-...

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