The Radio - 2 mm Spectral Index of the Crab Nebula Measured with GISMO

Understand

We present results of 2 mm observations of the Crab Nebula, obtained using the Goddard-IRAM Superconducting 2 Millimeter Observer (GISMO) bolometer camera on the IRAM 30 m telescope.

• Additional 3.3 mm observations with the MUSTANG bolometer array on the Green Bank Telescope are also presented.
• The integrated 2 mm flux density of the Crab Nebula provides no evidence for the emergence of a second synchrotron component that has been proposed.
• It is consistent with the radio power law spectrum, extrapolated up to a break frequency of log(nu_{b} [GHz]) = 2.84 +/- 0.29 or nu_{b} = 695^{+651}_{-336} GHz.