Context:
Pune based astronomers have discovered two new Millisecond Pulsars (MSP) — rotating neutron stars — using an indigenously developed novel technique, which was applied during an ongoing sky survey conducted by the Giant Metrewave Radio Telescope (GMRT).
Image Source: The Indian Express
About Millisecond Pulsars (MSP)
- MSPs are dense, tiny neutron stars, which are formed when a massive star (for example, the Sun) collapses.
- They are named pulsars because they emit pulses of radiation at regular intervals.
- Millisecond pulsars emit radiation every few milliseconds.
- The properties of these radiations can reveal key information about the neutron stars, which are the densest bodies in the universe excluding blackholes.
- Chances of detection of gravitational waves are higher when there is a significant population of MSPs in a region.
Giant Metrewave Radio Telescope (GMRT):
- GMRT is a low-frequency radio telescope that helps investigate various radio astrophysical problems ranging from nearby solar systems to the edge of the observable universe.
- Location: Near Narayangaon in Pune district.
- Operated by: The National Centre for Radio Astrophysics (NCRA) under the Tata Institute of Fundamental Research.
- Specification: It consists of an array of 30 antennas of 45 m diameter each, spread out over a 30 km region about 80 km from Pune, with sophisticated electronics and computing for processing the data from all the antennas.
Neutron stars:
- Neutron stars are the remains of the cores of massive stars that have reached the end of their lives.
- They are one of the two possible evolutionary endpoints of the most massive stars, the other being black holes.
Pulsars:
- Pulsars are rotating neutron stars observed to have pulses of radiation at very regular intervals that typically range from milliseconds to seconds.
- Pulsars have very strong magnetic fields which funnel jets of particles out along the two magnetic poles.
- These accelerated particles produce very powerful beams of light.
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News Source: Indian Express
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