PULSARS are rapidly rotating Neutron Stars. This presentation provides a brief insight into its discovery, its properties and significance.

1. PULSARS
Cosmic Lighthouses
Rayyan Abdullah
rayyanabd@gmail.com

2. Introduction
Pulsars:
• rapidly rotating neutron stars that blast out pulses of radiation at
regular intervals.
• formed when stars die (stellar zombie)
• highly dense
Death of Stars
Black Hole Neutron Star

3. Pulsar Discovery
• Jocelyn Bell: A young scientist working on a radio telescope project
with supervisor Anthony Hewish
Jocelyn Bell Burnell
Anthony Hewish
Mullard Radio Astronomy Observatory, near Cambridge

4. A Curious Signal
• November 28 1967: An incredible accident.
• The signal, a series of sharp pulses that came every 1.3 seconds.

5. Little Green Men?
Wait, are we getting a call from 'Little Green Men'?

6. • The signal was so regular that it sparked playful speculation about
alien communication!
• Bell and her advisor Anthony Hewish jokingly called the new source
LGM-1, for “Little Green Men”.

7. Aliens In The Attic

8. Cosmic Lighthouses
• The signals were from rapidly spinning neutron stars – pulsars!
• Pulsars emit beams of light like a cosmic lighthouse.
Pulsars Lighthouse

9. Fast and Furious
• Pulsars spin incredibly fast, some hundreds of times per second!
• Fastest Pulsar: 716 rotations per second.
Mr Scientific (TouTube)

10. Cosmic Genesis
• Formation: Collapse under gravity
• Made of neutrons
• Highly dense
𝑀 > 1.5 𝑀𝑠𝑢𝑛 , 𝑀 < 3 𝑀𝑠𝑢𝑛
R = 10 km

11. Significance
“Pulsars might be millions of miles away, but they help us understand
our universe better!“
• gravity
• calculate cosmic distances
• stable time-keeping devices

12. Conclusion
"Pulsars: the universe's quirky, light-flashing superstars!“
• Pulsars are spinning neutron stars
• emit rhythmic beams of em radiation,
• aiding in timekeeping and
• revealing cosmic mysteries.

13. Thank You!
"Thanks for joining the cosmic dance of pulsars!"
Explified (YouTube)