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Astronomers Discover Rare White Dwarf Pulsar

Artist’s impression of a white dwarf pulsar. In this binary star system, a rapidly spinning white dwarf (right) accelerates electrons

Ingrid-pelisoli , Annie-standke , James-munday , Davidah-buckley , Axel-schwope , Leibniz-institute-for-astrophysics-potsdam , University-of-warwick , Department-of-physics , Collaborative-research , M-garlick-university-of-warwick , Exotic-binary-star-system , Leibniz-institute

35 great Beatles covers by indie/alt artists

35 great Beatles covers by indie/alt artists
brooklynvegan.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from brooklynvegan.com Daily Mail and Mail on Sunday newspapers.

California , United-states , Laibach , Slovenia-general- , Slovenia , Hoboken , Trbovlje , New-jersey , Oklahoma , To-ride , Ibaraki , Japan

September 1, 1939: A tale of two papers - 3 Quarks Daily

Two seminal physics papers published on the same date had very different fates, attesting to the role of contingency in science.

United-kingdom , Poland , Germany , University-of-california-at-berkeley , California , United-states , Manhattan , New-york , Denmark , Hiroshima , Japan , Switzerland

A rotating white dwarf shows different compositions on its opposite faces

White dwarfs, the extremely dense remnants left behind by most stars after their death, are characterized by a mass comparable to that of the Sun compressed into the size of an Earth-like planet. In the resulting strong gravity, heavy elements sink towards the centre and the upper layer of the atmosphere contains only the lightest element present, usually hydrogen or helium1,2. Several mechanisms compete with gravitational settling to change a white dwarf’s surface composition as it cools3, and the fraction of white dwarfs with helium atmospheres is known to increase by a factor of about 2.5 below a temperature of about 30,000 kelvin4–8; therefore, some white dwarfs that appear to have hydrogen-dominated atmospheres above 30,000 kelvin are bound to transition to be helium-dominated as they cool below it. Here we report observations of ZTF J203349.8+322901.1, a transitioning white dwarf with two faces: one side of its atmosphere is dominated by hydrogen and the other one by helium. This peculiar nature is probably caused by the presence of a small magnetic field, which creates an inhomogeneity in temperature, pressure or mixing strength over the surface9–11. ZTF J203349.8+322901.1 might be the most extreme member of a class of magnetic, transitioning white dwarfs—together with GD 323 (ref. 12), a white dwarf that shows similar but much more subtle variations. This class of white dwarfs could help shed light on the physical mechanisms behind the spectral evolution of white dwarfs. The Zwicky Transient Facility has observed a transitioning white dwarf with two faces, with one side of its atmosphere dominated by hydrogen and the other by helium.

Cambridge , Cambridgeshire , United-kingdom , Montreal , Quebec , Canada , Netherlands , Douglas-gough , Gran-telescopio-canarias , Gentile-fusillo , Holland-publishing-co , Astronomical-society-of-the-pacific-conference-series

Pink Floyd's 'The Dark Side of the Moon': Album-Length Tributes

A look back at entire-album updates of Pink Floyd's 'Dark Side of the Moon.'

Jamaica , Boston , Massachusetts , United-states , London , City-of , United-kingdom , West-valley-city , Utah , California , Sweden , American

Pink Floyd's 'The Dark Side of the Moon': Album-Length Tributes

A look back at entire-album updates of Pink Floyd's 'Dark Side of the Moon.'

Jamaica , California , United-states , West-valley-city , Utah , London , City-of , United-kingdom , Sweden , Boston , Massachusetts , American

This Week in Space: Speedy Stars, a Postcard From Mars, and Tatooine

Plus, scientists make a key discovery in how to beam solar power down from space.

London , City-of , United-kingdom , Montreal , Quebec , Canada , Texas , United-states , Mount-sharp , Spain , Spanish , Canadian

These are the Fastest Stars in the Galaxy

These are the Fastest Stars in the Galaxy
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United-states , Subrahmanyan-chandrasekhar , Milky-way-galaxy , Chandrasekhar-mas , Chandrasekhar-mass , White-dwarfs ,

NASA Just Observed the Brightest Explosion in Recorded History, Details Inside

The great celebrity theoretical physicist Michio Kaku once famously quipped that he turned down several offers from military-industrial companies who wan...

Roberta-pillera , Neil-gehrels-swift-observatory , Fermi-gamma-ray-space-telescope , White-dwarfs , International-space , Low-earth-orbit ,

Watch The Flaming Lips' Unexpected Cover Of Madonna's 'Borderline' In Atlanta

Watch The Flaming Lips bust out a cover of Madonna’s pop hit “Borderline” at their show Saturday in Atlanta.

Wayne-coyne , Cola-roxy , Warner-bros , Flaming-lips , Coca-cola-roxy , White-dwarfs , Frontman-wayne-coyne , Pink-robots , Life-defeats-existential ,