Journey to Extragalactic Gamma Ray Burst GRB 250702B | NOIRLab
This video begins with the stellar field around the host galaxy of GRB 250702B—the longest gamma-ray burst that astronomers have ever observed. The image comprises observations from the Gemini North telescope, one half of the International Gemini Observatory, funded in part by the U.S. National Science Foundation and operated by NSF NOIRLab, as well as the U.S. Department of Energy-fabricated Dark Energy Camera, mounted on the NSF Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, a Program of NSF NOIRLab.
It zooms into a close-up view of the host galaxy taken with the Gemini North telescope. This image is the result of over two hours of observation, yet the host galaxy appears extremely faint due to the large amount of dust surrounding it.
The DECam data were acquired on July 3, 2025. The Gemini North data were acquired on July 20, 2025.
Credit: International Gemini Observatory / CTIO/NOIRLab/DOE/NSF/AURA/N. Bartmann (NSF NOIRLab)
Image processing: J. Miller (International Gemini Observatory/NSF NOIRLab), M. Zamani & D. de Martin (NSF NOIRLab)
Duration: 30 seconds
Release Date: Dec. 8, 2025
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Read science paper "Optical/Infrared Observations of the Extraordinary GRB 250702B: A Highly Obscured Afterglow in a Massive Galaxy Consistent with Multiple Possible Progenitors": https://iopscience.iop.org/article/10.3847/2041-8213/ae1d67
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