we propose a series of 15 iso observations to monitor the ir variability of the blazar 3c279, contemperaneously with other observations at gamma ray, x-ray and optical wavelengths. iso observations made in pv phase have shown that the synchrotron break frequency lies inside the iso range. determinaton of the break frequency is a key diagnostic of synchrotron and synchrotron-self-compton models. our proposed observations would; - measure the exact synchrotron break frequency, and search for flux-dependant variations of that frequency; - search for possible variations in ir flux and spectral slope; - search for possible correlated variations between the ir continuum properties and those at other wavelengths.
Instrument
CAM01 , PHT03 , PHT22
Temporal Coverage
1996-12-17T10:21:21Z/1997-07-03T00:36:28Z
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, Barr et al., 1999, 'MULTIFREQUENCY MONITORING OF THE ENIGMATIC BLAZAR 3C279', 1.0, European Space Agency, https://doi.org/10.5270/esa-gdmztjh
