First direct mapping of a magnetic field around a galactic pulsar
An international group of astronomers has succeeded in directly recording the magnetic surroundings of one of the most peculiar pulsars in the Milky Way. Pulsars are rapidly spinning remnants of massive stars that survived a supernova explosion and emit intense beams of radiation.
The new observations provide the first direct evidence of the magnetic field structure enveloping these fast-rotating stellar corpses. The results confirm a forecast made decades ago concerning the path along which charged particles stream away from such objects.
- Pulsars are compact leftovers of exploded stars
- The magnetic field guides outgoing particle streams
- Direct mapping supports emission models
The measurement is regarded as a significant advance in understanding the physical conditions near these cosmic lighthouses. Until now, many assumptions about particle escape around pulsars relied on indirect inference and theory, the basis of which has now been reinforced by data.
Additional studies will examine whether the method can be extended to other members of this object class. The researchers note that direct field mapping opens fresh opportunities to investigate the interaction between stellar remnants and the interstellar medium.