The general relativistic instability supernova of a supermassive Population III star

• Verfasst von: Chen, Ke-Jung [VerfasserIn]
• Verfasst von: Heger, Alexander [VerfasserIn]
• Verfasst von: Woosley, Stan [VerfasserIn]
• Verfasst von: Almgren, Ann [VerfasserIn]
• Verfasst von: Whalen, Daniel J. [VerfasserIn]
• Verfasst von: Johnson, Jarrett L. [VerfasserIn]
• Titel: The general relativistic instability supernova of a supermassive Population III star
• Verf.angabe: Ke-Jung Chen, Alexander Heger, Stan Woosley, Ann Almgren, Daniel J. Whalen, and Jarrett L. Johnson
• E-Jahr: 2014
• Jahr: 2014 July 8
• Umfang: 6 S.
• Fussnoten: Gesehen am 08.09.2020
• Titel Quelle: Enthalten in: The astrophysical journal / 1
• Ort Quelle: London : Institute of Physics Publ., 1996
• Jahr Quelle: 2014
• Band/Heft Quelle: 790(2014,2) Artikel-Nummer 162, 6 Seiten
• ISSN Quelle: 1538-4357
• DOI: doi:10.1088/0004-637X/790/2/162
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1729044379

Abstract

The formation of supermassive Population III stars with masses ≳10,000 M ☉ in primeval galaxies in strong ultraviolet backgrounds at z ∼ 15 may be the most viable pathway to the formation of supermassive black holes by z ∼ 7. Most of these stars are expected to live for short times and then directly collapse to black holes, with little or no mass loss over their lives. However, we have now discovered that non-rotating primordial stars with masses close to 55,000 M ☉ can instead die as highly energetic thermonuclear supernovae powered by explosive helium burning, releasing up to 1055 erg, or about 10,000 times the energy of a Type Ia supernova. The explosion is triggered by the general relativistic contribution of thermal photons to gravity in the core of the star, which causes the core to contract and explosively burn. The energy release completely unbinds the star, leaving no compact remnant, and about half of the mass of the star is ejected into the early cosmos in the form of heavy elements. The explosion would be visible in the near infrared at z ≲ 20 to Euclid and the Wide-Field Infrared Survey Telescope, perhaps signaling the birth of supermassive black hole seeds and the first quasars.