South Cheshire Astronomical Society - Talk Archive Item

Notice Issued 10/03/2019 13:04
Extra speaker info added: 21/03/2019 12:31


Public Talk

Thursday 21st Mar 2019

7:00pm for 7:30pm start

Please arrive soon after 7pm to book your place and pay entry or membership subscriptions.


Venue: Cheshire College - South & West
previously named South Cheshire College
(location and entry fee details )

Speaker: Dr Tom Williams

- Research Associate - Solar Physics group
University of Central Lancashire (UCLAN)

Talk Title: “The Sun, it’s Atmosphere and Solar Flares”

Image illustrative of talk

Composite Image elements credits & extra Information related to the speaker's work and the talk (follow the links):

Main background from: Solar Storm and Space Weather - Frequently Asked Questions | NASA

Image of Dr Tom Williams cut out from : Dr Tom Williams's ResearchGate Profile;


Further Information about the speaker, his work, and the talk gathered by our SCASTRO Secretary/Talks Arranger, Mike Maunder and issued in his meeting reminder email heralding the talk:-

The main aim of Tom's work at UCLAN is to understand the ongoing processes within the solar atmosphere that may be responsible for heating the solar corona to several million degrees. Additionally, his work involves working with international colleagues at NASA, where he collaborates with the science team on sounding rocket missions.

Unlike the atmosphere of the Earth, the temperature of the Sun’s atmosphere increases with altitude, to the point where temperatures exceed 1 million degrees. This discovery in the early 20th century led to the greatest mystery in solar physics, “What is heating the corona?” and remains unsolved to this day. Currently there are two schools of thought on what may be heating the Sun’s atmosphere: magnetic waves and small-scale (nano)flares. It is believed waves are dominant in regions where the Sun is not very active, whereas in regions of high activity, nanoflares are the dominant source of heating. This talk will primarily focus on these nanoflare events, and a couple of sounding rocket missions, which are a collaborative effort between NASA Marshall Space Flight Center, UCLAN, and other institutions.