Pulsar

$Medvedev modeled wave diffraction off a circular reflecting region with radially varying index of refraction outside of it to better understand the Crab Nebula’s zebra pattern.$

Physicist Solves Mystery of Crab Nebula’s Unique ‘Zebra’ Pattern

An artist’s impression of the system assuming that the massive companion star is a black hole. The brightest background star is its orbital companion, the radio pulsar PSR J0514-4002E. The two stars are separated by 8 million km and orbit each other every 7 days.

Astronomers Discover Most Massive Neutron Star—or Least Massive Black Hole

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