Swift

Definition

Swift is a space telescope launched by NASA in 2004 to detect gamma-ray bursts (GRBs). It is equipped with instruments that allow it to observe and rapidly pinpoint the location of these high-energy events across multiple wavelengths.

5 Must Know Facts For Your Next Test

1. Swift's primary mission is to study gamma-ray bursts, the most powerful explosions in the universe.
2. It has three main instruments: the Burst Alert Telescope (BAT), X-Ray Telescope (XRT), and Ultraviolet/Optical Telescope (UVOT).
3. Swift can autonomously repoint itself within minutes to observe afterglows of GRBs.
4. The data collected by Swift has greatly contributed to understanding the origins and mechanisms of gamma-ray bursts.
5. Swift's rapid response and multi-wavelength observations have helped identify host galaxies and redshift distances for many GRBs.

Review Questions

• What are the three main instruments onboard Swift?
• How does Swift contribute to understanding gamma-ray bursts?
• Why is Swift’s ability to rapidly repoint itself significant?

Related terms

Gamma-Ray Burst: A highly energetic explosion observed in distant galaxies, believed to be associated with supernovae or neutron star mergers.

Burst Alert Telescope (BAT): An instrument on Swift that detects gamma-ray bursts and provides initial localization.

Afterglow: The emission following a gamma-ray burst, observable in X-rays, optical, and radio wavelengths.