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Sgr A

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astronomy12 days ago•55 min saved

Milky Way’s Core May Hide an Ultra-Magnetized Pulsar

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.

via Space|

#astronomy #galactic-center #general-relativity

astronomy1 year ago•8 min saved

"Revealing the Hidden Magnetic Fields Around the Milky Way's Supermassive Black Hole"

The Event Horizon Telescope has captured the first view of polarized light and magnetic fields surrounding Sagittarius A* (Sgr A*), the supermassive black hole at the heart of the Milky Way, revealing similarities with the magnetic fields around the supermassive black hole in the galaxy M87. This suggests that strong and well-organized magnetic fields could be common to all black holes and hints at the possibility of a hidden and faint jet around Sgr A*. The findings provide compelling evidence that strong magnetic fields are ubiquitous to these cosmic titans and could influence our understanding of how galaxies evolve.

via Space.com|

#astronomy #event-horizon-telescope #magnetic-fields

astronomy2 years ago•3 min saved

"Possible Extraterrestrial Presence Detected in Orbit around Milky Way's Black Hole"

Astronomers have potentially discovered an extragalactic star, named S0–6, among the stars orbiting the supermassive black hole at the center of the Milky Way, Sagittarius A*. The star's chemical composition suggests it originated in a small satellite galaxy of the Milky Way that was cannibalized billions of years ago. If confirmed, this would make S0–6 the first extragalactic star found near Sgr A*. Further investigation is needed to unravel the mysteries of these stars near the supermassive black hole.

via Space.com|

#astronomy #extragalactic-star #milky-way