The “Crab Nebula”: the most famous supernova remnant. distance 2000 pc diameter 3 pc.
Post on 02-Jan-2016
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Synchrotron Emission: relativistic electrons spiralling around magnetic field lines.
Gives rise to the “ghostly” blue light (non-thermal).
radiation
Recombination Emission Line Radiation:
(optical)
(ultraviolet)
Red filaments are due to H photonsproduced when protons and electronsrecombine to form hydrogen atoms.
Expanding at 1,800 km/s
diameter = 3 pc
implying an explosion around the
year 1054!
Crab Nebula is Rapidly Expanding:
Hubble Space Telescope (optical)
Pulsar injecting energy into the Crab nebula!
Chandra Space Telescope (X-ray)
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