:Issued: 2010 Jan 19 1035 UTC :Product: documentation at http://www.sidc.be/products/bul #--------------------------------------------------------------------# # SIDC Weekly bulletin on Solar and Geomagnetic activity # #--------------------------------------------------------------------# WEEK 472 from 2010 Jan 11 SOLAR ACTIVITY ------------- Solar activity was low to moderately active with the transit of NOAA AR 1040, which was about 20 degrees east of the central meridian on Jan. 11th. It produced 3 C-flares during the week. GEOMAGNETIC ACTIVITY ------------------- Geomagnetic activity was extremely low during the whole week. --------------------------------------------------------------------------- DAILY INDICES DATE RC EISN 10CM Ak BKG M X 2010 Jan 11 /// 024 91 007 B1.0 0 0 2010 Jan 12 049 021 93 004 B1.1 0 0 2010 Jan 13 /// 022 91 008 A9.0 0 0 2010 Jan 14 032 020 90 005 B1.0 0 0 2010 Jan 15 /// 017 85 007 B1.4 0 0 2010 Jan 16 032 016 84 001 B1.0 0 0 2010 Jan 17 /// 011 83 001 B1.1 0 0 # RC : Sunspot index (Wolf Number) from Catania Observatory (Italy) # EISN : Estimated International Sunspot Number # 10cm : 10.7 cm radioflux (DRAO, Canada) # Ak : Ak Index Wingst (Germany) # BKG : Background GOES X-ray level (NOAA, USA) # M,X : Number of X-ray flares in M and X class, see below (NOAA, USA) --------------------------------------------------------------------------- NOTICEABLE EVENTS DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE #--------------------------------------------------------------------# # Solar Influences Data analysis Center - RWC Belgium # # Royal Observatory of Belgium # # Fax : 32 (0) 2 373 0 224 # # Tel.: 32 (0) 2 373 0 491 # # # # For more information, see http://www.sidc.be. Please do not reply # # directly to this message, but send comments and suggestions to # # 'sidctech@oma.be'. If you are unable to use that address, use # # 'rvdlinden@spd.aas.org' instead. # # To unsubscribe, visit http://sidc.be/registration/unsub.php # #--------------------------------------------------------------------#