Seeing the universe through gamma-ray eyes

Jul 09, 2008

The scientists have stopped holding their breath. Three weeks after the launch of the Gamma-ray Large Area Space Telescope (GLAST), researchers from Stanford University, the Stanford Linear Accelerator Center and elsewhere have shaken awake the scientific instruments aboard their $690 million satellite, 350 miles above Earth, for the first time. And everything's working.

On the Large Area Telescope, the principal instrument on GLAST, the computers booted up properly, the 16 gamma-ray detectors came to life, and communications checked out well. The observatory's navigation system is following directions from the ground to turn toward interesting objects.

"I've been watching space projects for 30 years or so and I've never seen one go as smoothly as this one," said Roger Blandford, the director of the Kavli Institute for Particle Astrophysics and Cosmology, which is housed both on the main Stanford campus and at the Stanford Linear Accelerator Center (SLAC).

The telescope will see the normally invisible gamma rays from stars and other cosmic objects and offer a more complete view of some of the most violent events in the universe. GLAST will study, among other things, enormously powerful gamma-ray bursts, strange beams of charged particles from spinning black holes and pulses of energy from spinning neutron stars.

It may even find the gamma-ray signature of dark matter, the unseen material that may hold the universe together.

Data from the satellite already has begun flowing to the Instrument Science Operations Center at SLAC, where it is used to calibrate the telescope for the work ahead. The telescope is weeding out unwanted cosmic rays and measuring the first of the billion or so gamma rays it should eventually see from cosmic sources.

Some 30 collaboration members from around the world have come to SLAC to assist in the commissioning phase to bring the Large Area Telescope to its mission-ready performance.

"Everybody's really happy," said Rob Cameron, the manager of the SLAC operations center. "We've got plenty of work to do. We've got to calibrate the instrument, tune it up to prepare it for science."

GLAST is a NASA project, a consortium of six countries and 14 U.S. research institutions. At Stanford, project members come from SLAC, a U.S. Department of Energy laboratory; the Physics Department; the Hansen Experimental Physics Laboratory; and the Kavli Institute for Particle Astrophysics and Cosmology.

Source: Stanford University

Explore further: What was here before the solar system?

Related Stories

South American parrot in trouble: researchers

2 hours ago

A South American parrot with a wine-colored chest is in deep trouble, with its population down to some 3,000 and a habitat reduced to a speck of what it once was, researchers said Tuesday.

Recommended for you

What was here before the solar system?

2 hours ago

The solar system is old. Like, dial-up-fax-machine-old. 4.6 billion years to be specific. The solar system has nothing on the universe. It's been around for 13.8 billion years, give or take a few hundred ...

Herschel's hunt for filaments in the Milky Way

3 hours ago

Observations with ESA's Herschel space observatory have revealed that our Galaxy is threaded with filamentary structures on every length scale. From nearby clouds hosting tangles of filaments a few light-years ...

Sharp-eyed Alma spots a flare on famous red giant star

4 hours ago

Super-sharp observations with the telescope Alma have revealed what seems to be a gigantic flare on the surface of Mira, one of the closest and most famous red giant stars in the sky. Activity like this in ...

NASA telescopes set limits on space-time quantum 'foam'

May 28, 2015

A team of scientists has used X-ray and gamma-ray observations of some of the most distant objects in the universe to better understand the nature of space and time. Their results set limits on the quantum ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

menkaur
4 / 5 (1) Jul 10, 2008
the 2nd megadevice is online... (the first one is still being tested and made ready, but not for too long )
Modernmystic
4 / 5 (1) Jul 11, 2008
Pffft. Give me a terrestrial planet finder over ten of these things. Let's look for the REAL interesting stuff for once.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.