Speaker
Description
Magnetic fields can be generated in cosmic string wakes due to the Biermann mechanism in the presence of neutrino inhomogeneities. As the cosmic string moves through the plasma, the small magnetic field is amplified by the turbulence in the plasma. Relativistic charged particles that cross the magnetized wake of a cosmic string will therefore emit synchrotron radiation. The opening angle of the cosmic string is very small, so the wake appears like a relativistic jet. Assuming a homogeneous magnetic field in the wake of the string, we obtain the synchrotron emission from non-thermal relativistic electrons in the wake of the string. The emitted radiation has a broad peak and is over a wide range of frequencies. We show that the spectrum can be mapped to some of the unknown sources in different regions of the current available sky catalogs.
| soumennayak@uohyd.ac.in | |
| Affiliation | School of Physics, University of Hyderabad |
