X-treme Astronomy: Seeing the Universe through X-ray eyes

by Dr Darren Baskill of the University of Sussex

...is the next Institute of Physics South Central Branch (Brighton Area) lecture, and is to be held at the University of Sussex.

A beautiful clear night full of stars may look poetically peaceful, but it's the biggest illusion known to man. The Universe is violent almost beyond comprehension. Some stars you can see in the night sky are being consumed by their partners; others are violently collapsing in the biggest explosions known to man; and black holes are surrounded by disks of hot gas, the distorted remains of countless stars.
X-rays originate from wherever gas is heated up to millions of degrees in the most energetic phenomena we know of. During this talk you will see the universe as witnessed through the eyes of the latest generation of X-ray telescopes.

X-treme Astronomy - Seeing the Universe through X-ray Eyes
by Dr Darren Baskill of the University of Sussex
7pm, on Tuesday 13th October
Lecture Theatre 1A7
Pevensey 1 Building
University of Sussex


Admission is free and everyone is welcome. Details of how to get to the venue can be found here.

Image: XMM-Newton, Europe's X-ray Space Telescope

Being an Astronomer

There are about 10,000 astronomers around the world - but what do they do?!

Astronomers are usually based at a university, and they often spend some of their time teaching. But when the students are away they get time to do some 'proper work' - their research. This is especially true during the summer holidays!

Maybe once a year (or more, if they are lucky), an astronomer gets the chance to use a world-class telescope, either on-the-ground or in space.

I've been lucky enough to get time on the UK Infra-Red Telescope (UKIRT), one of the British telescopes based in Hawaii. On the 31st of August, I set off on the very long journey... London to Los Angeles (11 hours!), catching another plane a few hours later to Honolulu (a 6 hour journey), staying overnight in a hotel before finally catching an early-morning short flight (1 hour) to Hawaii's big island - from where I took the photograph of the summit below.

After a day (trying) to recuperate (the spare day also being useful in case I missed a connecting flight), I headed to the Joint Astronomy Centre in the coastal town of Hilo for a debriefing of how to use the telescope, and to discuss any issues. A lot of this time was spent discussing the health and safety issues. We are working nights, with heavy equipment, at 4,200m - this incredible altitude (almost half-way up Mount Everest!) makes altitude sickness a real and ever-present danger.

I then travelled from sea-level, half way up to the summit to Hale Pohaku - the astronomers and support staff hotel. While it is some way from the telescopes, it is considered to be a safe altitude, at only 2800m.

More about what we are actually observing in another post...!