Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-12-21
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
16 pages, 4 figures
Scientific paper
In this paper we propose a new plausible mechanism of supernova explosions specific to close binary systems. The starting point is the common envelope phase in the evolution of a binary consisting of a red super giant and a neutron star. As the neutron star spirals towards the center of its companion it spins up via disk accretion. Depending on the specific angular momentum of gas captured by the neutron star via the Bondi-Hoyle mechanism, it may reach millisecond periods either when it is still inside the common envelope or after it has merged with the companion core. The high accretion rate may result in strong differential rotation of the neutron star and generation of the magnetar-strength magnetic field. The magnetar wind can blow away the common envelope if its magnetic field is as strong as $10^{15}\,$G, and can destroy the entire companion if it is as strong as $10^{16}\,$G. The total explosion energy can be comparable to the rotational energy of a millisecond pulsar and reach $10^{52}\,$erg. However, only a small amount of $^{56}$Ni is expected to be produced this way. The result is an unusual type-II supernova with very high luminosity during the plateau phase, followed by a sharp drop in brightness and a steep light-curve tail. The remnant is either a solitary magnetar or a close binary involving a Wolf-Rayet star and a magnetar. When this Wolf-Rayet star explodes this will be a third supernovae explosion in the same binary.
Barkov Maxim V.
Komissarov Serguei S.
No associations
LandOfFree
Recycling of Neutron Stars in Common Envelopes and Hypernova Explosions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Recycling of Neutron Stars in Common Envelopes and Hypernova Explosions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recycling of Neutron Stars in Common Envelopes and Hypernova Explosions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-95309