Zoom Meeting - The A-X of Solar Flares (Prof Helen Mason)
Thu, 24 Jul
from 7:30pm to 9:00pm
by Luton Astronomical Society
The A-X of Solar Flares – Observations in the EUV and Soft X-rays
Prof Helen Mason, University of Cambridge, UK
The Sun has given us quite a few X class flares recently and even some beautiful displays of the aurora in the UK. During solar flares, explosive releases of energy, the plasma temperature can reach as high as 10MK or even more. Large flares are often accompanied by filament eruptions and Coronal Mass Ejections, CMEs, and high energy particles, which can often reach the Earth’s environment. The EUV and soft X-ray wavelength ranges are ideally suited for studying this very hot plasma, with a lot of emission lines from highly ionised ions.
Some early observations of solar flares in the EUV and soft X-rays were made with the Solar Maximum Mission, then with SoHO, and more recently with Hinode and the Solar Dynamics Observatory. Spectroscopic diagnostics enable us to determine the plasma properties – peak temperature, emission measure, electron number density and elemental abundances. Recent work on small flares has also been carried out using the XSM (X-ray Solar Monitor) on Chandraayan2 in collaboration with colleagues at ISRO’s Physical Research Laboratory, Ahmedebad, India.
This talk will review observations of solar flares from small, compact flares (A-B class) to large, complex X-class flare, and what we have learnt about them.
Zoom meeting for all
Join Zoom Meeting
https://us02web.zoom.us/j/86105025806?pwd=y9E4w1dHJHIViJjwsEc2hhyRN8vHsJ.1
Meeting ID: 861 0502 5806
Passcode: 774014
Prof Helen Mason, University of Cambridge, UK
The Sun has given us quite a few X class flares recently and even some beautiful displays of the aurora in the UK. During solar flares, explosive releases of energy, the plasma temperature can reach as high as 10MK or even more. Large flares are often accompanied by filament eruptions and Coronal Mass Ejections, CMEs, and high energy particles, which can often reach the Earth’s environment. The EUV and soft X-ray wavelength ranges are ideally suited for studying this very hot plasma, with a lot of emission lines from highly ionised ions.
Some early observations of solar flares in the EUV and soft X-rays were made with the Solar Maximum Mission, then with SoHO, and more recently with Hinode and the Solar Dynamics Observatory. Spectroscopic diagnostics enable us to determine the plasma properties – peak temperature, emission measure, electron number density and elemental abundances. Recent work on small flares has also been carried out using the XSM (X-ray Solar Monitor) on Chandraayan2 in collaboration with colleagues at ISRO’s Physical Research Laboratory, Ahmedebad, India.
This talk will review observations of solar flares from small, compact flares (A-B class) to large, complex X-class flare, and what we have learnt about them.
Zoom meeting for all
Join Zoom Meeting
https://us02web.zoom.us/j/86105025806?pwd=y9E4w1dHJHIViJjwsEc2hhyRN8vHsJ.1
Meeting ID: 861 0502 5806
Passcode: 774014