PCS 181 Lecture Notes - Sn 1987A, Large Magellanic Cloud, Irregular Galaxy
21 Mar 2013
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Document Summary
A neutron star (ns) = compacted core of an exploded sstar that had a magnetic field. A neutron star has a strong magnetic field which directs charged particles to the north of south poles. The particles continually strike the surface of the ns creating polar hot spots . These hot spots radiate over a wide range of wavelengths visible and invisible. If the rotating ns is properly oriented with respect to earth, we detect the beams of radiation emitted by the hot spots . Discovered / reported from chile by ian shelton, an observer from the university of toronto. Sn1987a occurred in the large magellanic cloud = an irregular galaxy near mw at ~170,000 ly distance. The progenitor star was a blue giant star, sanduleak.
