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  2. White dwarf - Wikipedia

    en.wikipedia.org/wiki/White_dwarf

    The highly magnetized white dwarf in the binary system AR Scorpii was identified in 2016 as the first pulsar in which the compact object is a white dwarf instead of a neutron star. [120] A second white dwarf pulsar was discovered in 2023. [121]

  3. List of smallest known stars - Wikipedia

    en.wikipedia.org/wiki/List_of_smallest_known_stars

    White dwarfs are stellar remnants produced when a star with around 8 solar masses or less sheds its outer layers into a planetary nebula. The leftover core becomes the white dwarf. It is thought that white dwarfs cool down over quadrillions of years to produce a black dwarf. [15] Neutron star: RX J0720.4−3125: 0.0000064683 – 0.0000077332

  4. Binary pulsar - Wikipedia

    en.wikipedia.org/wiki/Binary_pulsar

    An intermediate-mass binary pulsar (IMBP) is a pulsar-white dwarf binary system with a relatively long spin period of around 10–200 ms consisting of a white dwarf with a relatively high mass of approximately . [7] The spin periods, magnetic field strengths, and orbital eccentricities of IMBPs are significantly larger than those of low mass binary pulsars (LMBPs). [7]

  5. PSR J0740+6620 - Wikipedia

    en.wikipedia.org/wiki/PSR_J0740+6620

    PSR J0740+6620 is a neutron star in a binary system with a white dwarf, located 4,600 light years away in the Milky Way galaxy.It was discovered in 2019, by astronomers using the Green Bank Telescope in West Virginia, U.S., and confirmed as a rapidly rotating millisecond pulsar.

  6. Neutron star - Wikipedia

    en.wikipedia.org/wiki/Neutron_star

    A neutron star is the collapsed core of a massive supergiant star. It results from the supernova explosion of a massive star—combined with gravitational collapse—that compresses the core past white dwarf star density to that of atomic nuclei.

  7. List of white dwarfs - Wikipedia

    en.wikipedia.org/wiki/List_of_white_dwarfs

    First white dwarf with a planet WD B1620−26: 2003 PSR B1620-26 b (planet) This planet is a circumbinary planet, which circles both stars in the PSR B1620-26 system [5] [6] First singular white dwarf with a planet WD 1145+017: 2015 WD 1145+017 b: Planet is extremely small and is disintegrating. First white dwarf that is a pulsar: AR Scorpii A ...

  8. Timeline of white dwarfs, neutron stars, and supernovae

    en.wikipedia.org/wiki/Timeline_of_white_dwarfs...

    1930 – Subrahmanyan Chandrasekhar discovers the white dwarf maximum mass limit. 1933 – Fritz Zwicky and Walter Baade propose the neutron star idea and suggest that supernovae might be created by the collapse of normal stars to neutron stars—they also point out that such events can explain the cosmic ray background.

  9. List of neutron stars - Wikipedia

    en.wikipedia.org/wiki/List_of_Neutron_stars

    Zooming to RX J1856.5−3754 which is one of the Magnificent Seven and, at a distance of about 400 light-years, the closest-known neutron star. Neutron stars are the collapsed cores of supergiant stars. [1] They are created as a result of supernovas and gravitational collapse, [2] and are the second-smallest and densest class of stellar objects ...