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Orbiting Gamma-ray Observatory Begins Search For Odd Space Objects

Date:
July 14, 2008
Source:
Stanford University
Summary:
The researchers have stopped holding their breath. The $690 million observatory they sent into orbit June 11 has awoken to begin its observation of the gamma-ray light from celestial mystery object such as black holes, spinning neutron stars and dark matter.

The GLAST spacecraft and Delta II rocket leap off the launch pad.
Credit: Carleton Bailie for United Launch Alliance

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.

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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.


Story Source:

The above story is based on materials provided by Stanford University. Note: Materials may be edited for content and length.


Cite This Page:

Stanford University. "Orbiting Gamma-ray Observatory Begins Search For Odd Space Objects." ScienceDaily. ScienceDaily, 14 July 2008. <www.sciencedaily.com/releases/2008/07/080710094031.htm>.
Stanford University. (2008, July 14). Orbiting Gamma-ray Observatory Begins Search For Odd Space Objects. ScienceDaily. Retrieved March 4, 2015 from www.sciencedaily.com/releases/2008/07/080710094031.htm
Stanford University. "Orbiting Gamma-ray Observatory Begins Search For Odd Space Objects." ScienceDaily. www.sciencedaily.com/releases/2008/07/080710094031.htm (accessed March 4, 2015).

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