we propose polarimetric mapping of the crab nebula for the spring launch with isocam in the 12-18 and 5-8.5 micron bands. this will enable separate colour maps to be derived for the synchrotron and thermal (dust/lines) components of the emission. the distribution of synchrotron colours will elucidate the nature of the spectral break in the mir. if the break is due to synchrotron losses, we expect to see a reddening towards the edges of the nebula. if it is intrinsic to the injected spectrum, we expect to see no radial colour trends accompanying the spectral break in the spatially integrated flux density.
Instrument
CAM01 , PHT32 , PHT40
Temporal Coverage
1998-02-15T21:15:59Z/1998-02-15T22:47:47Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, TUFFS et al., 1999, 'POLARIMETRIC MAPPING OF SYNCHROTRON EMISSION IN THE CRAB NEBULA', 1.0, European Space Agency, https://doi.org/10.5270/esa-qb7kkpx
