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Neutron stars are known by their rotation. They create a huge magnetic dynamo that powers the emissions seen in x-rays and gamma rays. The result is a pulsar or magnetar. The Crab Nebula is a classic example of these amazing objects. They can do similar things to what we've seen with novae but with much more extreme results: kilonovae. Neutron stars are known by their rotation. They create a huge magnetic dynamo that powers the emissions seen in x-rays and gamma rays. They can also do similar things to what we've seen with novae, but with more extreme results.
Complete the videos with /"OpenStax Astronomy/"
https://openstax.org/books/astronomy/pages/23-thinking-ahead
23: The death of the stars
https://en.wikipedia.org/wiki/Kilonova
Kilonova
https://en.wikipedia.org/wiki/Neutron_star
Neutron stars
https://en.wikipedia.org/wiki/Angular_momentum#Conservation_of_angular_momentum
Conservation of Angular Momentum
https://en.wikipedia.org/wiki/Pulsar
Pulsars
https://en.wikipedia.org/wiki/Magnetar
Magnetars
https://en.wikipedia.org/wiki/Tesla_(unit)
Telsa
https://en.wikipedia.org/wiki/Jocelyn_Bell_Burnell
Jocelyne Bell Burnell
https://phys.org/news/2015-02-nuclear-pasta-insight-strange-world.html
Nuclear pasta could offer a glimpse into the strange world of neutron stars
https://astrobites.org/2017/10/05/nuclear-pasta-in-neutron-stars/
Nuclear pastes in neutron stars
https://arxiv.org/pdf/1606.03646.pdf
Astromaterials science and nuclear pastes
https://en.wikipedia.org/wiki/Crab_Pulsar
The crab pulsar
http://hubblesite.org/newscenter/archive/releases/2016/37/
Hubble view of the crab pulsar
http://chandra.harvard.edu/photo/2002/0052/index.html
Space film reveals shocking secrets of the crab pulsar
http://www.chandra.harvard.edu/photo/2013/vela/
Vela Pulsar Jet: New Chandra Movie Features Neutron Star Action
https://www.nasa.gov/mission_pages/chandra/multimedia/vela2012.html
Vela Pulsar
https://www.nasa.gov/mission_pages/chandra/news/vela_pulsar.html
New Chandra Movie Features Neutron Star Action
https://en.wikipedia.org/wiki/X-ray_burster
x-ray spark gap
http://www2011.mpe.mpg.de/heg/www/HEG-PIFICONS/ro-4.jpg
Picture
This is part of a comprehensive online introductory college course. This video series has been used at William Paterson University and CUNY Hunter in online courses as well as to supplement course materials. Notes and links can be found in the videos at the beginning of each lecture. In this lecture series I talk about the final states of stars. The amazing white dwarfs and neutron stars. White dwarfs are fascinating end states of solar mass (or slightly larger) stars. Sirius /"b/" is among the closest known, and we know a lot about these strange planet-sized stars thanks to Dog Star. Then, if we combine the common nature of white dwarfs and the fact that most stars belong to binary (or more) systems, then we can see that as stars die, they can interact. Type 1a novae and supernovae are the result. White dwarf stars can cause sudden explosions called novae and even form a special supernova. Next, we turn our attention to some of the most amazing objects in the universe that are still neutron stars. Often considered in astronomy as the object on the way to black holes, neutron stars are the most extreme objects in the universe, composed of what we might still call normal matter. Black holes are something else. These boundary objects have wild properties and have extreme effects on their environment. Forged in the instantaneous fire of a core-collapse supernova, these are impressive objects. Finally, neutron stars are known by their rotation. They create a huge magnetic dynamo that powers the emissions seen in x-rays and gamma rays. The result is a pulsar or magnetar. The Crab Nebula is a classic example of these amazing objects. They can do similar things to what we've seen with novae but with much more extreme results: kilonovae.
00:00 Presentation
Pulsars 1:17: accidental discovery in 1967
6:57 Pulsar model /"Lighthouse/"
12:04 Evolution of the pulsar
17:48 The Crab Nebula in History
21:14 Multi-wavelength crab
10:22 p.m. The crab by the Chandra X-Ray observatory
25:33 Recent image of M1 by Hubble
29:50 Vela Pulsar by Chandra
32:12 Binary neutron stars
35:03 An X-ray binary spins a neutron star
38:11 Neutron star collision
39:50 Too high?
40:57 REVIEW QUESTIONS
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