Fig. 8
From: A Dataset of Lower Band Whistler Mode Chorus and Exohiss with Instrumental Noise Thresholds
Distribution of Survey data search coil noise for the Van Allen Probe A EMFISIS instrument. Percentiles of the probability distribution of the trace of the magnetic power spectral density matrix as a function of frequency \({f}_{l}\), obtained from all 65 frequency channels \(l\) of Survey data measured by the EMFISIS Waves instrument onboard Van Allen Probe A between 14:00 and 17:00 UT on January 1, 2015, and corresponding to examples from Fig. 2. The colored dotted lines show the theoretical cumulative probabilities of the core model distribution according to Eq. 4, with the root-mean-square noise level \({\sigma }_{l}^{2}\) determined using the observed median value. The black dotted line corresponds to the P0 = 10−7 detection threshold from the tail model distribution according to Eqs. 5 and 6, with the same \({\sigma }_{l}^{2}\).
