Minutes
1. Albert - reported on idea to look for radio signatures of dark matter annihilation or decay in Tianlai data or FAST data. SKA as well. ULDM or ALPs are candidates in the radio energy range. Narrow lines would be formed scenarios that produce 2 photons. Search for cross-correlation of radio maps and galaxy survey as a function of wavelength. Presumably would be brightest from Milky Way, but would appear a just an unidentified line that could have been missed.
2. Olivier - reported gain ripple in 2017 data was due to imperfect masking of calibration noise source.
3. Topics for future weeks