Speaker
Description
The extended jets of the microquasar SS 433 have been observed in radio, optical, X-ray, and recently very-high-energy gamma-ray by HAWC. The multi-wavelength detections motivate searches for high-energy gamma-ray counterparts in the Fermi-LAT data in the 100 MeV– 300 GeV band. We report on the first-ever joint analysis of Fermi-LAT and HAWC observations to study the spectrum and location of gamma-ray emission from a source inside a region-of-interest. Our analysis finds common emission sites of GeV-to-TeV gamma-rays inside the eastern and western lobes of SS 433. The observation suggests that the gamma rays from the eastern lobe is consistent with inverse-Compton emission by an electron population that is accelerated by jets. To explain both the GeV and TeV flux, the electrons need to have a soft intrinsic energy spectrum, or undergo a quick cooling process due to synchrotron radiation in a magnetized environment.
Keywords
black hole jets; joint analysis of gamma-ray data from multiple experiments
| Subcategory | Experimental Results |
|---|---|
| Collaboration | Ferrmi-LAT |
| other Collaboration | HAWC |
