Tycho's SNR (Radio/Optical Mosaic)
Image
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About this Image

Left: Optical image of Tycho's SNR taken with the Palomar 200-in telescope. Right: Radio emission from this remnant of the supernova of 1572 is produced by extremely energetic electrons gyrating in a magnetic field. The morphology of the spherically expanding blast wave from the supernova explosion is clearly visible. The observed strength of emission suggests that electrons are accelerated, and magnetic field amplified, at the shock wave. These observations, in connection with earlier theoretical work, may help elucidate the concrete physical mechanisms by which the inferred acceleration and field amplification may be occurring. As well, the quantitative profile of radio emission from the outside of the remnant, through the bright rim and down to the central plateau, can yield information on the density structure and dynamics of the expanding gas.

Investigator(s):  S.P. Reynolds, R.A. Chevalier,

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Technical Data

    Telescope ALMA 
    Date of Observation 1981-12-10 
    Type of Observation Continuum Observations 
    Band L 
    Wavelength 20 cm 
    Frequency 1.4 GHz 
    Center of Image RA: 00:22:0.00, Dec: 63:52:0.00 (B1950)  
    Field of View 0.2833 x 0.2833 degrees  
    Technical Caption Left: Telescope - Palomar 200-inch. Plate + filter - 103aE + RG2. Exposure - 120 minutes September 1970. Image reproduced from Plate 1. Right: The VLA was in the C-configuration using 26 antennas. NOTE: NRAO cannot grant permission for use of the left-hand image. Permission for use of this image must be obtained from sources other than the NRAO. NRAO holds the rights to the right-hand image.  

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