Synchrotron emission has recently been detected in the jet of a massive protostar , providing further evidence that certain jet formation characteristics for young stars are similar to those found for highly relativistic jets from AGN .
We present data at 325 and 610 MHz taken with the GMRT of the young , low-mass star DG Tau , an analog of the Sun soon after its birth .
This is the first investigation of a low-mass YSO at such low frequencies .
We detect emission with a synchrotron spectral index in the proximity of the DG Tau jet and interpret this emission as a prominent bow shock associated with this outflow .
This result provides tentative evidence for the acceleration of particles to relativistic energies due to the shock impact of this otherwise very low-power jet against the ambient medium .
We calculate the equipartition magnetic field strength B _ { min } \approx 0.11 mG and particle energy E _ { min } \approx 4 \times 10 ^ { 40 } erg , which are the minimum requirements to account for the synchrotron emission of the DG Tau bow shock .
These results suggest the possibility of low energy cosmic rays being generated by young Sun-like stars .