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rare magnetic propeller in a binary star system

Dragon
Dragon
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Post by Dragon Wed Jun 09, 2021 3:39 am

The star system, referred to as J0240, is only the second of its kind on record.

It was identified in 2020 as an unusual cataclysmic variable—a binary system consisting of a white dwarf star and a mass-donating red star.

Normally, the compact white dwarf star collects the donated gas and grows in mass. In J0240, however, the fast-spinning, magnetic white dwarf rejects the donor's gas and propels it out of the binary system.


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Dragon
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Post by Dragon Wed Jun 09, 2021 3:40 am

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Credit: Dr. Mark Garlick

An illustration of a fast-spinning, magnetic white dwarf rejecting the donor gas in the cataclysmic variable known as J0240.


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rare magnetic propeller in a binary star system 334pu7m
Dragon
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Post by Dragon Wed Jun 09, 2021 3:42 am



Two White Dwarfs Merge After Million+ MPH Whirl

Two white dwarfs called RX J0806.3+1527 or J0806 come together to create the smallest orbit of any known binary system (321.5 senconds, or less than 5 minutes).

Gravitational wave energy increases as the two stars get closer.


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rare magnetic propeller in a binary star system 334pu7m
Dragon
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rare magnetic propeller in a binary star system Empty Re: rare magnetic propeller in a binary star system

Post by Dragon Wed Jun 09, 2021 3:43 am



The Hubble Space Telescope has detected silicon (a rocket planet element), in a white dwarf's atmosphere.

It is the result of asteroids being ripped apart by the gravity of the dead star and impacting other debris (white flashes in the animation).


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    Current date/time is Tue Oct 26, 2021 6:52 am