Feeds

Swift observatory sends back stunning test shot

Gamma-Ray hunters ready for action

  • alert
  • submit to reddit

Choosing a cloud hosting partner with confidence

The final instrument on board Swift, the satellite launched in November last year to hunt for gamma-ray bursts, has been switched on, and the space lab is now fully operational. The ultra-violet optical telescope (UVOT) has sent its first picture back to Earth, and is poised to snap its first gamma-ray burst.

The Pinwheel Galaxy

The false colour image is of the Pinwheel galaxy, M101, regarded by many as the perfect spiral galaxy. The picture shows hot, star forming regions on the arms of the galaxy, while the centre is older, and cooler.

The picture was created by combining light from several of the UVOT's filters, all the way from invisible-to-humans ultraviolet, to the blues and yellows of the visible spectrum. In the image, however, the shortest wavelengths are represented as blue, while the longest are coloured in red.

Swift will investigate gamma-ray-bursts, the most violent, and mysterious explosions in the universe. It has been designed to respond rapidly to detection of gamma rays - within 20-70 seconds. This is vital as the whole explosion can be over in as little as 200 seconds.

Professor Keith Mason, the UK UVOT lead at University College London commented: "The UVOT isn't as powerful as [observatories like Hubble, or Keck], but has the advantage of observing from the very dark skies of space. Moreover, it will start observing the burst afterglow within minutes, as opposed to the day or week long delay inherent with heavily used observatories. This is extremely important because the bulk of the afterglow fades within hours."

The UVOT is the third of Swift's observing instruments that will come into play, after the Burst Alert Telescope and the X-Ray Telescope. It can pinpoint a gamma ray source to sub-arcsecond accuracy, the equivalent of the eye of a needle held at arms length, PPARC (Particle Physics and Astronomy Research Council) helpfully informs us.

It will reveal more about the behaviour of this ultraviolet afterglow, such as the temperature and velocity of material ejected during the explosion. Knowing how the afterglow is shaped, and how it fades will give researchers an insight into the explosion that preceded it.

Peter Roming, UVOT lead scientist at Penn State, notes that we know next to nothing about this stage of a burst. "This is because the atmosphere blocks most ultraviolet rays from reaching telescopes on Earth, and there have been few ultraviolet telescopes in orbit. We simply haven't yet reached a burst fast enough with a UV telescope." ®

Related stories

Swift blasts off on dying star mission
ESA's lunar probe closes on target
Supernova revealed in gamma rays

Beginner's guide to SSL certificates

More from The Register

next story
FORGET the CLIMATE: FATTIES are a MUCH BIGGER problem - study
Fat guy? Drink or smoke? You're worse than a TERRORIST
Renewable energy 'simply WON'T WORK': Top Google engineers
Windmills, solar, tidal - all a 'false hope', say Stanford PhDs
Rosetta probot drilling DENIED: Philae has its 'LEG in the AIR'
NOT best position for scientific fulfillment
SEX BEAST SEALS may be egging each other on to ATTACK PENGUINS
Boffin: 'I think the behaviour is increasing in frequency'
HUMAN DNA 'will be FOUND ON MOON' – rocking boffin Brian Cox
Crowdfund plan to stimulate Blighty's space programme
Post-pub nosh neckfiller: The MIGHTY Scotch egg
Off to the boozer? This delicacy might help mitigate the effects
I'M SO SORRY, sobs Rosetta Brit boffin in 'sexist' sexy shirt storm
'He is just being himself' says proud mum of larger-than-life physicist
NASA launches new climate model at SC14
75 days of supercomputing later ...
LIFE, JIM? Comet probot lander found 'ORGANICS' on far-off iceball
That's it for God, then – if Comet 67P has got complex molecules
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Website security in corporate America
Find out how you rank among other IT managers testing your website's vulnerabilities.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.