SN Shock Evolution in the Circumstellar Medium surrounding SN 1987A
نویسنده
چکیده
We study the structure of the circumstellar medium surrounding SN 1987A in the equatorial plane. Furthermore, we study the evolution of the SN shock within this medium during the first 25 years, and the resulting hard X-ray and radio emission from the remnant.
منابع مشابه
The Evolution of Supernovae in the Winds of Massive Stars
We study the evolution of supernova remnants in the circumstellar medium formed by mass loss from the progenitor star. The properties of this interaction are investigated, and the specific case of a 35 M⊙ star is studied in detail. The evolution of the SN shock wave in this case may have a bearing on other SNRs evolving in wind-blown bubbles, especially SN 1987A.
متن کاملSupernova Explosions in Winds and Bubbles, with Applications to Sn 1987a
Massive stars can significantly modify the surrounding medium during their lifetime. When the stars explode as supernovae, the resulting shock wave expands within this modified medium and not within the interstellar medium. We explore the evolution of the medium around massive stars, and the expansion of the shock wave within this medium. We then apply these results to understanding the expansi...
متن کامل2 00 7 Chandra Observations of Supernova 1987 A
We have been monitoring Supernova (SN) 1987A with Chandra X-Ray Observatory since 1999. We present a review of previous results from our Chandra observations, and some preliminary results from new Chandra data obtained in 2006 and 2007. High resolution imaging and spectroscopic studies of SN 1987A with Chandra reveal that X-ray emission of SN 1987A originates from the hot gas heated by interact...
متن کاملThe Evolution of Supernovae in Circumstellar Wind Bubbles II: Case of a Wolf-Rayet star
Mass-loss from massive stars leads to the formation of circumstellar windblown bubbles surrounding the star, bordered by a dense shell. When the star ends its life in a supernova (SN) explosion, the resulting shock wave will interact with this modified medium. In a previous paper (Dwarkadas 2005) we discussed the basic parameters of this interaction with idealized models. In this paper we go a ...
متن کاملCangaroo-iii Search for Gamma Rays from Sn 1987a and the Surrounding Field
Optical images of SN 1987A show a triple ring structure. The inner (dust) ring has recently increased in brightness and in the number of hot spots suggesting that the supernova shock wave has collided with the dense pre-existing circumstellar medium, a scenario supported by radio and X-ray observations. Such a shocked environment is widely expected to result in the acceleration of charged parti...
متن کامل