Measurement by FIB on the ISS: Two Emissions of Solar Neutrons Detected?

Figure 6

From the top to the bottom, each figure corresponds to (1) the location of the satellite, whether it was over the day side of the Earth or the night side, (2) the strength of the magnetic field measured by SEDA-AP, (3) the differential event rate per minute, and (4) the integral counting rate with Universal Time. The SUN or ECL of the top panel represents whether the satellite was on the day side (1) or the night side (0) of the Earth, respectively. The satellite observed the Sun after 20 : 02 UT. Every 45 minute, the satellite passes over the Equator and approaches both Polar Regions. The FIB is an omnidirectional sensor and detects neutrons from all directions. The peak during 20 : 06–20 : 07 UT may be induced by solar neutrons.