How to Hear a Planet Near a Dead Star ⚡ экспресс
Exoplanets were first discovered around pulsars via precise timing. It is proposed that they can also be detected through radio emission from pulsar-planet magnetospheric interaction. Special relativistic numerical simulations were performed for planets in a pulsar wind of velocity 0.985c (Lorentz factor 5.795). Planets are modeled as perfectly conducting solid surfaces in the external magnetic field of the pulsar. Radio emission is produced in an extended magnetic structure on the planet's nightside. For the known pulsar PSR J0636+5129 b, the emission is predicted to be detectable, and observational prospects are outlined.
The first exoplanet was discovered around an unusual cosmic lighthouse — a neutron star known as a pulsar. These ultra-dense remnants of dead stars spin at tremendous speeds and emit precise radio pulses. In 1967, Jocelyn Bell Burnell detected such signals, and at first they were mistaken for an alien message.
Now scientists have found a new way to "hear" planets around pulsars. Besides the pulses, the star emits a continuous wind — a stream of charged particles racing at nearly the speed of light. A planet in this hurricane becomes an obstacle: as the wind flows around it, it stirs up radio waves — like a stone thrown into a stream creates ripples in the water.
Computer simulations confirmed that such radio glow can be detected from the known pulsar PSR J0636+5129 b. This opens the door to finding other exoplanets in the harshest corners of the Universe, even where deadly radiation reigns.
🎯 Planets around pulsars are one of the most extreme places in the Universe: magnetic fields there are trillions of times stronger than Earth's, and the particle wind is accelerated to near light-speed.