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  2. Betty Louise Turtle - Wikipedia

    en.wikipedia.org/wiki/Betty_Louise_Turtle

    Betty Louise Turtle (née Webster [also Webster in published works]) (20 May 1941 - 29 September 1990) was an Australian astronomer and physicist.In 1971, with her colleague Paul Murdin, she identified the powerful X-ray source Cygnus X-1 as the first clear candidate for a black hole.

  3. QSO J0529-4351 - Wikipedia

    en.wikipedia.org/wiki/QSO_J0529-4351

    The redshift of J0529-4351 is 3.962. The object itself is classified as a radio-quiet quasar.Fitting accretion models to the spectra yields an accretion rate of matter onto the black hole of 280 to 490 solar masses per year for an accretion disk around the black hole observed at an angle of zero to 60 degrees, with accretion occurring near the Eddington limit.

  4. Timeline of black hole physics - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_black_hole_physics

    1972 — Jacob Bekenstein suggests that black holes have an entropy proportional to their surface area due to information loss effects; 1974 — Stephen Hawking applies quantum field theory to black hole spacetimes and shows that black holes will radiate particles with a black-body spectrum which can cause black hole evaporation

  5. ULAS J1342+0928 - Wikipedia

    en.wikipedia.org/wiki/ULAS_J1342+0928

    ULAS J1342+0928 is the third-most distant known quasar detected and contains the second-most distant and oldest known supermassive black hole, [1] [5] [6] [7] at a reported redshift of z = 7.54. The ULAS J1342+0928 quasar is located in the Boötes constellation . [ 3 ]

  6. Oldest black hole discovered dating back to 470 million years ...

    www.aol.com/news/oldest-black-hole-discovered...

    Scientists have discovered the oldest black hole yet, a cosmic beast formed a mere 470 million years after the Big Bang. The findings, published Monday, confirm what until now were theories that ...

  7. QSO J0313−1806 - Wikipedia

    en.wikipedia.org/wiki/QSO_J0313%E2%88%921806

    QSO J0313−1806 [2] was the most distant, and hence also the oldest known quasar at z = 7.64, at the time of its discovery. [1] In January 2021, it was identified as the most redshifted (highest z) known quasar, with the oldest known supermassive black hole (SMBH) at (1.6 ± 0.4) × 10 9 solar masses.

  8. List of nearest known black holes - Wikipedia

    en.wikipedia.org/wiki/List_of_nearest_known...

    This is a list of known black holes that are close to the Solar System. It is thought that most black holes are solitary, but black holes in binary or larger systems are much easier to detect. [1] Solitary black holes can generally only be detected by measuring their gravitational distortion of the light from more

  9. Oppenheimer–Snyder model - Wikipedia

    en.wikipedia.org/wiki/Oppenheimer–Snyder_model

    Pulsars had already been discovered and black holes were no longer considered mere textbook curiosities. [15] Cygnus X-1, the first solid black-hole candidate, was discovered by the Uhuru X-ray space telescope in 1971. [1] Jeremy Bernstein described it as "one of the great papers in twentieth-century physics." [14]