All articles tagged with #pulsar
Astronomers compared two high-resolution Hubble images of the Crab Nebula taken in 1999/2000 and 2024, finding the iconic supernova remnant has expanded and changed shape over 25 years. The nebula’s filaments are moving outward at about 3.4 million mph, driven by energy from the central pulsar rather than a passing shock wave, and the new view reveals 3D structure and varying gas temperatures within the expanding shell.
Hubble released a new image of the Crab Nebula, the remnant of a supernova observed in 1054 A.D., showing that its outer gas filaments have evolved and are moving faster than the inner regions over the past 25 years, a motion driven by the nebula’s central pulsar.
Space.com reports astrophotographer Ogetay Kayali captured IC 443—the Jellyfish Nebula—a 5,000‑light‑year‑old supernova remnant in Gemini near Propus. The image highlights the glowing hydrogen shell and intricate interstellar filaments, with a pulsar remaining from the explosion. Kayali notes the composition can resemble both a jellyfish and a brain, illustrating the remnant’s striking shell and its environment.
Scientists suspect a rapidly spinning, highly magnetic neutron star (a pulsar) sits near the Milky Way’s center. A Breakthrough Listen radio survey with the Green Bank Telescope (2021–2023) found a single pulsar candidate, BLPSR, around 122 rotations per second. If confirmed, such a pulsar orbiting Sagittarius A* could serve as a precise cosmic clock to test general relativity in the extreme gravity near the galaxy’s supermassive black hole, though the Galactic Center is notoriously hard to survey. Future facilities like ngVLA and SKA could help determine how many pulsars truly populate the core.
Columbia University and Breakthrough Listen identify an 8.19-millisecond pulsar candidate near the Milky Way’s Sagittarius A*, with follow-up observations underway; confirming it could enable precision tests of General Relativity around the galaxy’s central supermassive black hole.
A newly discovered exoplanet, PSR J2322-2650b, orbiting a millisecond pulsar, exhibits bizarre features such as a lemon shape, a carbon-rich atmosphere with potential diamond rain, and an unusual atmospheric rotation, challenging current understanding of planetary formation and evolution.
An unusual exoplanet called PSR J2322-2650b, located 2,000 light years away and shaped like a lemon due to the intense gravity of its pulsar host, exhibits unique characteristics including a helium-and-carbon atmosphere where rain could turn into diamonds, making it potentially a new type of celestial object.
Astronomers using the James Webb Space Telescope have discovered a unique, lemon-shaped exoplanet called PSR J2322-2650b, orbiting a pulsar at a very close distance. The planet has an unusual composition dominated by helium and carbon, with surface temperatures up to 3,700°F, and may represent a new class of cosmic object due to its peculiar shape and atmosphere. Its origins are uncertain, raising the possibility of a new type of celestial body.
Astronomers using NASA's Webb Telescope discovered a lemon-shaped exoplanet, PSR J2322-2650 b, orbiting a pulsar with a unique helium-and-carbon atmosphere, challenging existing models of planetary formation and survival under extreme conditions.
The James Webb Space Telescope discovered a unique, lemon-shaped exoplanet called PSR J2322-2650b orbiting a pulsar, with an atmosphere dominated by helium and carbon, featuring clouds of carbon soot that may form diamonds, and exhibiting an unusual formation process that challenges current understanding of planet formation.
NASA's satellite observations of the pulsar J1023 reveal that its energy output is primarily powered by a pulsar wind colliding with nearby material, with polarization data indicating a coherent, ordered magnetic process near the star, challenging previous models and providing insights into neutron star evolution.
Astronomers discovered Calvera, a 'forbidden' runaway pulsar and supernova remnant located in a sparse region of the Milky Way, challenging previous notions about star formation in such areas. The system, about 13,000 to 16,500 light-years away and 10,000 to 20,000 years old, was detected by radio and X-ray telescopes, revealing that massive star remnants can exist far from the galactic plane, providing new insights into stellar evolution and supernova mechanisms.
A supernova explosion has created a ghostly hand-shaped nebula in space, known as MSH 15-52, featuring a pulsar at its center. Using combined radio and X-ray data, astronomers have revealed intricate structures and interactions within the nebula, providing new insights into the aftermath of stellar explosions and the behavior of pulsars. Further research is needed to fully understand these cosmic phenomena.
NASA's Chandra X-ray Observatory and radio data reveal new insights into the pulsar wind nebula MSH 15-52, a young, powerful nebula formed by a supernova explosion, with features that challenge current understanding of high-energy particle interactions and magnetic fields in space.
NASA's new composite image combines X-ray data from Chandra and radio data from ATCA to reveal detailed structures of the pulsar B1509-58 and its surrounding nebula, highlighting complex magnetic filaments and interactions with supernova debris, while also raising questions about the nature of the supernova blast wave.