Pulsars are known for their regularity and stability. These fast-rotating neutron stars emit radio waves with such consistent pulses that astronomers can use them as a kind of cosmic clock. But recently a pulsar emitted gamma rays with tremendous energy.

The gamma rays were the most energetic photons ever observed, with energies of more than 20 teraelectronvolts, and astronomers are struggling to understand how that’s possible. The results were published in Nature Astronomy, which describes the burst of gamma rays emanating from the Vela Pulsar.

The Vela gamma rays were detected by the High Energy Stereoscopic System (HESS). High-energy gamma rays have been seen in pulsars before so that part isn’t surprising. Neutron stars have tremendously strong magnetic fields, and when charged particles are caught in those fields they can be accelerated to a large fraction of the speed of light, which causes them to emit light. The magnetic fields are strongest at the magnetic poles of the neutron star, which is why they often emit powerful beams of radio light. When these beams, or light cones sweep past our direction due to the neutron star’s rotation, we see the regular pulses of light we call pulsars.

What kind of radiation do pulsar emits

A pulsar (from pulsating radio source) is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles

Why does a pulsar emits radiation

Particles accelerated by the pulsar stream along these open field lines and produce radiation that stimulates a cascade of additional particles, which radiate as well. Because the particles are moving relativistically (close to the speed of light), their radiation is beamed in the direction of their motion.

Do pulsar emits gamma rays

Scientists using the H.E.S.S. observatory in Namibia have detected the highest energy gamma rays ever from a dead star called a pulsar. The energy of these gamma rays clocked in at 20 tera-electronvolts, or about ten trillion times the energy of visible light

Is a pulsar a black hole

Pulsars are a type of neutron star. Neutron stars and black holes behave similarly. The main difference between these objects is mass

Why it is called pulsar

Rapidly spinning neutron stars have strong magnetic fields. Such a neutron star emits high-energy beams from its north and south magnetic poles. When these beams are pointed toward Earth and flash across us as the neutron star rotates, we see pulses. So astronomers named these beasts pulsars.

What is unique about pulsars

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. Often, the magnetic field is not aligned with the spin axis, so those beams of particles and light are swept around as the star rotates.

Are pulsars radioactive

Pulsars are rapidly rotating neutron stars that blast out pulses of radiation at regular intervals ranging from seconds to milliseconds.

Is pulsar a galaxy

Scientists have detected the brightest pulsar ever observed outside the Milky Way, revealing the true identity of a far-off luminous object previously mistaken for a distant galaxy. Pulsars are incredibly dense neutron stars that emit beams of electromagnetic radiation from their poles

Can a black hole eat pulsar

The black hole would maybe collide/absorb the pulsar (as recently detected via gravitational waves) Finally, depending on the period of time we are talking about, we have to consider black hole evaporation throught Hawking ratiation (it would make it smaller

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