(supernova in February 1987 rare for being visible by the naked eye)
SN 1987A is a 1987 supernova in the
Large Magellanic Cloud, about 168000 light-years away,
whose light reached Earth on February 23, 1987.
Its apparent magnitude at its brightest was 3 in May 1987.
Neutrino detectors, including the IMB
detected bursts of neutrinos coincident with the
supernova EMR reaching Earth.
It has been much studied since.
It is considered a core collapse supernova and
the supernova remnants are studied to figure out the
workings of them. The SN 1987A remnant has more
circular symmetry than spherical, suggesting the
progenitor's stellar rotation was a factor.
Observations of the light curve have shown that the
explosion was highly asymmetric, i.e., an anisotropic explosion.
There is effort to identify a resulting neutron star,
e.g., by comparing observations to observed characteristics of
remnants where there is clearer evidence of a neutron star.
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Referenced by pages:
International Ultraviolet Explorer (IUE)
supernova remnant (SNR)