Abstract Details

Name: Pramod Kumar
Affiliation: Jagan Nath University, Jaipur
Conference ID: ASI2017_405
Title : Inverse gradient for conduction cooling with temperature of solar Microflares thermal X-ray plasma
Authors and Co-Authors : 1. R. K. Choudhary, Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695022, India 2.Prof Y.C.Bhatt, Jagan Nath University, Jaipur 303901, India 3. Prof. Y. S. Shishodia, Jagan Nath University, Jaipur 303901, India
Abstract Type : Poster
Abstract Category : Sun and the Solar System
Abstract : We present inverse gradient for conduction cooling time (τc(T)) of solar Microflares thermal X-ray plasma with temperature (T). The inverse dependence of cooling time with temperature is the characteristic of Newton’s law of cooling which is true for the heat transfer by thermal conduction of a collisional isothermal process. For the analysis, we used X-ray spectra in ~4-10 keV of 10 solar Microflares observed by silicon detector (4-25 keV) on-board on SOXS mission using OSPEX software. From the thermal X-ray spectral modeling with the isothermal model in 4-10 keV and computation we find that the plasma temperature (T) to vary from 8.5-12.0 MK and emission measure (EM) from 0.007-0.095 x 10^49 cm-3. Employing volume (V) 4.6 x 10^26 cm3 and half loop length (L) 1.45 x 10^9 cm for the solar Microflares, we computed electron density (ne) to vary from 1.2-4:5 x 10^10cm3 and thermal energy (Eth) lies between 0.2 -0.9 x 10^29erg. The conduction cooling time (τc(T)) is found to vary between 50-562 seconds. We find that conduction cooling time (τc(T)) decreases with increase in plasma temperature (T). Present analysis is the agreement with the Newton’s law of cooling for solar Microflares thermal X-ray plasma.