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Gamma-Ray Bursts: Crash Course Astronomy #40
Gamma-ray bursts are not only incredible to study, but their discovery has an epic story all its own. Today Phil takes you through some Cold War history and then dives into what we know. Bursts come in two rough varieties: Long and short. Long ones are from hypernovae, massive stars exploding, sending out twin beams of matter and energy. Short ones are from merging neutron stars. Both kinds are so energetic they are visible for billions of light years, and both are also the birth announcements of black holes.
Crash Course Astronomy Poster:
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Table of Contents
Gamma-Ray Were Discovered During the Cold War 0:47
Bursts Come in Two Varieties: Long and Short 8:35
Long Bursts Are From Hypernovae, Massive Stars Exploding 6:46
Short Ones Are From Merging Neutron Stars 9:00
Both Are The Birthplace of Black holes 9:55
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PHOTOS/VIDEOS
Nuclear Bomb Images via Wikimedia Commons:
Operation Upshot Knothole
Ivy Mike
Castle Bravo
Upshot Knothole GRABLE
President Kennedy signs the Limited Nuclear Test Ban Treaty [credit: Wikimedia Commons]
Vela [credit: USAF]
The Crab Nebula [credit: NASA, ESA, J. Hester, A. Loll (ASU)]
Solar Flare [credit: NASA/SDO/AIA]
Gamma Ray Burst [credit: NASA/Goddard Space Flight Center Conceptual Image Lab]
Four ALMA antennas on the Chajnantor plain [credit: ESO/José Francisco Salgado (josefrancisco.org)]
Gamma Ray Burst 970228 [credit: Andrew Fruchter (STScI), Elena Pian (ITSRE-CNR), and NASA/ESA]
HST/STIS Image of the optical afterglow of w:GRB 970508 [credit: STScI/NASA]
Black Holes: Monsters in Space [credit: NASA/JPL-Caltech]
Naked-Eye Gamma-ray Burst Model for GRB 080319B [credit: NASA/Swift/Cruz deWilde]
2008 GRB [credit: NASA/Swift/Stefan Immler, et al.]
GRB Data [credit: NASA]
Imagine two massive stars born together as a binary star [credit: NASA/GSFC/D. Berry]
Colliding Binary Neutron stars [credit: NASA/D.Berry]
Black Hole Devours a Neutron Star [credit: NASA/D.Berry]
Eta Carinae [credit: Jon Morse (University of Colorado) & NASA Hubble Space Telescope]
WR 104: A Pinwheel Star System [credit: P. Tuthill (U. Sydney) & J. Monnier (U. Michigan), Keck Obs., ARC, NSF]
Swift HD Beauty Shot [credit: NASA/Goddard Space Flight Center]
Swift’s 500 Gamma-ray Bursts [credit: NASA/Goddard Space Flight Center]