Abstract Details
| Name: Vaibhav Pant Affiliation: Indian Institute of Astrophysics Conference ID: ASI2015_853 Title : TRANSVERSE OSCILLATIONS IN CORONAL RAIN Authors and Co-Authors : PATRICK ANTOLIN, NATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN, SUDIP MANDAL, DIPANKAR BANERJEE, INDIAN INSTITUTE OF ASTROPHYSICS Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : CORONAL RAIN IS THE PLASMA CONDENSATIONS WHICH FALL, WITH VELOCITY LESS THAN FREE FALL, TO CHROMOSPHERE ALONG THE LOOP LIKE PATHS. THEY ARE NORMALLY ASSOCIATED WITH ACTIVE REGION LOOPS. THEY CONSISTS OF COOL PLASMA AND ARE PRODUCED IN SOLAR ATMOSPHERE IN FEW MINUTES. THEY ARE BELIEVED TO BE FORMED IN CORONAL LOOPS BECAUSE OF THERMAL INSTABILITY. WE REPORT THE TRANSVERSE OSCILLATIONS IN CORONAL RAIN AS OBSERVED BY IRIS. SUCH OSCILLATIONS ARE ALSO REPORTED BEFORE USING SST IN H-ALPHA. IN IRIS WE CAN INVESTIGATE THE PROPERTIES OF CORONAL RAIN AT TRANSITION REGION AND SEISMOLOGIC PARAMETERS CAN BE DERIVED WHICH CAN GIVE AN ESTIMATE OF MAGNETIC FIELDS AND ALFVEN SPEED IN SUCH STRUCTURES. SUCH OSCILLATIONS ARE ALSO SEEN IN AIA 304 IMAGES AND THUS COMBINING IRIS AND AIA 304 WE CAN INVESTIGATE THE PROPERTIES OF CORONAL RAIN WITH DIFFERENT HEIGHTS ABOVE THE SUN SURFACE. IN THIS WORK WE REPORT TRANSVERSE OSCILLATIONS AS OBSERVED IN IRIS AND AIA 304, WE ESTIMATE SEISMOLOGIC PARAMETERS AND OTHER PROPERTIES OF CORONAL RAIN. |