Description

An unexplained flood of antimatter was bombarding our planet, and scientists have finally identified the culprit.
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The search for the source of the cosmic particle shower hitting the Earth has led scientists to a decades-old astronomical cold case: the powerful and mysterious gamma-ray source, Geminga. Join us as we piece together the clues that finally unmasked the true identity of Geminga, and learn how this enigmatic object has confounded scientists for half a century.



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00:00 Incoming Antimatter
01:59 Geminga
04:55 What Is a Pulsar?
06:32 Radio Silence
09:32 Geminga On the Move
14:54 Twin Pulsars
19:44 The Origin of Positrons
22:13 Glowing Gamma Rays



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References:
“ESA is hot on the trail of Geminga”, via esa.int https://astrumspace.info/ESAgeminga
“Mysterious GEMINGA on the Move”, eso.org https://astrumspace.info/Gemingaonthemove
“Fifty years ago Jocelyn Bell discovered pulsars and changed our view of the universe”, via theconversation.com https://astrumspace.info/pulsardiscovery
“Extended emission around the Geminga pulsar”, via mpg.de https://astrumspace.info/Gemingaemission
“Results from the Energetic Gamma-Ray Experiment Telescope (EGRET) on the Compton Observatory”, via sciencedirect.com https://astrumspace.info/EGRET
“ROSAT”, via nasa.org https://astrumspace.info/ROSAT
“Detection of a γ-ray halo around Geminga with the Fermi-LAT and implications for the positron flux”, via iop.org https://astrumspace.info/gammahalo
“Why is the Geminga pulsar radio quiet at frequencies higher than about 100 MHz?”, via harvard.edu https://astrumspace.info/radiosilent
“Chandra Images Show That Geometry Solves a Pulsar Puzzle”, via nasa.gov https://astrumspace.info/Chandrasolvespuzzle
“NASA’s Fermi Mission Nets 300 Gamma-Ray Pulsars … and Counting”, via nasa.gov https://astrumspace.info/Fermimission



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Credits:
Writer: Michelle Babcock
Video Editor: Nathália Huzian
Researcher: Edie Abrahams
Script Editor: Damaris McColgan
Thumbnail Designer: Peter Sheppard
Channel Manager: Georgina Brenner
Production Manager: Raquel Taylor
Head of Astrum: Jess Jordan
Creator of Astrum: Alex McColgan



With special thanks to:
NASA/ESO/ESA



#astrum #space #geminga