Physics
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..784..550s&link_type=abstract
MAGNETIC FIELDS IN THE UNIVERSE: From Laboratory and Stars to Primordial Structures. AIP Conference Proceedings, Volume 784, pp
Physics
Magnetic Fields, Microwaves, Solar Atmosphere, Electric And Magnetic Fields, Solar Magnetism, Radio, Microwave
Scientific paper
We present a statistical study of the evolution of active regions observed at microwave wavelengths during the 23rd solar cycle (1992-2004). Active regions are sites of increased magnetic fields, thus the radio emission at microwave wavelengths is mostly due to gyro-resonance of thermal electrons around relatively strong magnetic fields. We analyze active regions observed in full Sun images obtained daily by the Nobeyama Radioheliograph (NoRH) at 17 GHz. Additional information is obtained from photospheric magnetograms of the same day. Also a multiwavelength study provides a global view of the solar atmosphere above active regions, the radio images will be further compared to ultraviolet (SOHO) and H-alpha images. The active regions are characterized by: position, area, maximum and mean brightness temperatures, and magnetic field. The inferred magnetic fields are used to estimate the contribution to the emission at 17 GHz. We discuss the results of the correlation among these physical parameters.
Costa Joaquim E. Rezende
Selhorst Caius L.
Silva Adriana V. R.
No associations
LandOfFree
Study of active region temporal evolution at 17GHz does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Study of active region temporal evolution at 17GHz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of active region temporal evolution at 17GHz will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1300580