Images by Date
Images by Category
Solar System
White Dwarfs
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Galaxy Clusters
Cosmology/Deep Field
Images by Interest
Space Scoop for Kids
Sky Map
3D Wall
Photo Blog
Top Rated Images
Image Handouts
High Res Prints
Fits Files
Image Tutorials
Photo Album Tutorial
False Color
Cosmic Distance
Look-Back Time
Scale & Distance
Angular Measurement
Images & Processing
Getting Hard Copies
Image Use Policy
Web Shortcuts
Chandra Blog
RSS Feed
Chandra Mobile
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
More Images of GRB991216
ACIS X-ray Spectrum
This image illustrates the X-ray afterglow spectrum of GRB991216 obtained with the Advanced CCD Imaging Spectrometer (ACIS) instrument aboard the Chandra X-ray Observatory on December 18, 1999. The ACIS instrument is an array of charged coupled devices (CCDs). This instrument is especially useful because it can make X-ray images, and at the same time, measure the energy of each incoming X-ray, as depicted in this image.
(Credit: NASA/CNR/L.Piro et al)

Optical image of field around GRB991216
This image is an optical view of the area around GRB991216. The optical transient believed to be the GRB afterglow is indicated with an arrow.
(Credit: S.Jha et al. (Harvard-Smithsonian Center for Astrophysics))

Chandra HETG Spectrum
Shown here is the X-ray afterglow spectrum of GRB991216 obtained with Chandra's High Energy Grating Spectrometer (HETG). The HETG is one of two instruments aboard Chandra (the other being the Low Energy Grating Spectrometer) dedicated to high-resolution spectroscopy and can be used in conjunction with the ACIS or High Resolution Camera.
(Credit: NASA/CNR/L.Piro et al)

X-ray image of GRB991216
Taken with the ACIS instrument, this CCD image shows the observed X-ray afterglow.
(Credit: NASA/CXC/Piro et al.)

Chandra X-ray Image with Scale Bar

Scale bar = 10 arcsec
(Credit: NASA/CNR/L.Piro et al.)

Return to GRB991216 (03 Nov 00)