Kavli Affiliate: Roger W. Romani
| First 5 Authors: Abel L. Peirson, Ioannis Liodakis, Roger W. Romani, ,
| Summary:
Both leptonic and hadronic emission processes may contribute to blazar jet
emission; which dominates in blazars’s high energy emission component remains
an open question. Some intermediate synchrotron peaked blazars transition from
their low to high energy emission components in the X-ray band making them
excellent laboratories to probe both components simultaneously, and good
targets for the newly launched Imaging X-ray Polarimetry Explorer. We
characterize the spectral energy distributions for three such blazars:
CGRaBS~J0211+1051, TXS~0506+056, and S5~0716+714, predicting their X-ray
polarization behavior by fitting a multizone polarized leptonic jet model. We
find that a significant detection of electron synchrotron dominated
polarization is possible with a 300~ks observation for S5~0716+714 and
CGRaBS~J0211+1051 in their flaring states, while even 500~ks observations are
unlikely to measure synchrotron self-Compton polarization. Importantly,
non-leptonic emission processes like proton synchrotron are marginally
detectable for our brightest ISP, S5~0716+714, during a flaring state. Improved
{it IXPE} data reduction methods or next generation telescopes like {it eXTP}
are needed to confidently measure SSC polarization.
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