Finding the first cosmic explosions

• Verfasst von: Whalen, Daniel J. [VerfasserIn]
• Verfasst von: Smidt, Joseph [VerfasserIn]
• Verfasst von: Even, Wesley [VerfasserIn]
• Verfasst von: Woosley, S. E. [VerfasserIn]
• Verfasst von: Heger, Alexander [VerfasserIn]
• Verfasst von: Stiavelli, Massimo [VerfasserIn]
• Verfasst von: Fryer, Chris L. [VerfasserIn]
• Titel: Finding the first cosmic explosions
• Titelzusatz: III. Pulsational pair-instability supernovae
• Verf.angabe: Daniel J. Whalen, Joseph Smidt, Wesley Even, S.E. Woosley, Alexander Heger, Massimo Stiavelli, and Chris L. Fryer
• E-Jahr: 2014
• Jahr: 2014 January 15
• Umfang: 8 S.
• Fussnoten: Gesehen am 09.10.2020
• Titel Quelle: Enthalten in: The astrophysical journal / 1
• Ort Quelle: London : Institute of Physics Publ., 1996
• Jahr Quelle: 2014
• Band/Heft Quelle: 781(2014,2) Artikel-Nummer 106, 8 Seiten
• ISSN Quelle: 1538-4357
• DOI: doi:10.1088/0004-637X/781/2/106
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1735239267

Abstract

Population III supernovae have been the focus of growing attention because of their potential to directly probe the properties of the first stars, particularly the most energetic events that can be seen at the edge of the observable universe. But until now pulsational pair-instability supernovae, in which explosive thermonuclear burning in massive stars fails to unbind them but can eject their outer layers into space, have been overlooked as cosmic beacons at the earliest redshifts. These shells can later collide and, like Type IIn supernovae, produce superluminous events in the UV at high redshifts that could be detected in the near infrared today. We present numerical simulations of a 110 M ☉ pulsational pair-instability explosion done with the Los Alamos radiation hydrodynamics code Radiation Adaptive Grid Eulerian. We find that collisions between consecutive pulsations are visible in the near infrared out to z ∼ 15-20 and can probe the earliest stellar populations at cosmic dawn.