Time-series photometry was made for the large-amplitude δ Scuti star AD CMi in 2005 and 2006. High-quality photometric data provided in the literature were use
Annual modulations in timescales of intraday variability (IDY here-after) are discussed for six extragalactic sources:0716+714,0917+624,0954+65,1749+70,1803+78
Resonant heating of H, O+5, and Mg+9 by parallel propagating ioncyclotron Alfven waves in solar coronal holes at a heliocentric distance is studied using the he