Tag

Microquasar

All articles tagged with #microquasar

science6 months ago•4 min saved

Milky Way's Microquasar Identified as Cosmic Ray Source

A binary system in the Milky Way, V4641 Sagittarii, has been observed emitting cosmic rays with photon energies exceeding 200 TeV, making it a new 'cosmic ray monster' and challenging previous notions that supernova remnants were the primary sources of galactic cosmic rays. This discovery highlights the role of microquasars in accelerating particles to extremely high energies, providing new insights into cosmic ray origins and particle acceleration mechanisms within our galaxy.

via Earth.com|

#cosmic-rays #hawc #high-energy-gamma-rays

astronomy1 year ago•5 min saved

"Unraveling the Mysteries of Astrophysical Jet Acceleration and Cosmic Rays"

The SS 433 binary star system, known for its collimated jets of charged particles, has been observed to abruptly reappear as bright X-ray sources around 75 light years from their launch site, with gamma-ray emission detected for the first time by the H.E.S.S. Observatory. The gamma-ray emission shows an energy-dependent morphology, with the highest energy photons detected at the point where the jets reappear, while lower energy photons appear further along each jet, providing new insights into the acceleration and transport of relativistic electrons in astrophysical jets.

via Phys.org|

#astronomy #astrophysical-jet #gamma-ray-emission

science-and-technology2 years ago•3 min saved

"Maximizing 'Microquasar' Findings with NASA's IXPE"

NASA's IXPE spacecraft has provided new insights into the process of particle acceleration in extreme environments by studying a microquasar called SS 433. The spacecraft's observations revealed that the magnetic field near the acceleration region points in the direction the jets are moving, indicating a well-ordered magnetic field alignment. This finding challenges previous theories and suggests that the magnetic fields within powerful jets may be "trapped" and stretched when they collide with interstellar matter. The data could also help determine whether the same mechanism acts to align magnetic fields in outflows expelled by various phenomena in space.

via NASA|

#black-holes #ixpe #microquasar

astronomy2 years ago•3 min saved

Unexplained radio signals detected from star-sized black hole

Astronomers have observed periodic changes in a jet of highly magnetic plasma emitted by a small black hole known as GRS 1915+105. These changes, detected by China's FAST telescope, suggest that the black hole's rotation may not be aligned with its accretion disk, causing the jet to wobble. The observed signal, with a frequency of about 5 Hertz, has never been seen before in radio waves from a black hole. This discovery could provide insights into the feeding habits of smaller black holes and the physics of black hole systems. The exact cause of these oscillations remains unknown, but further observations may help unravel the mystery.

via Yahoo Life|

#astronomy #black-hole #grs-1915105

science-and-technology2 years ago•1 min saved

"FAST Unveils Groundbreaking Black Hole Phenomenon, Revolutionizing Emission Research"

China's Five-hundred-meter Aperture Spherical radio Telescope (FAST) has made a groundbreaking discovery by observing sub-millisecond low-frequency radio quasi-periodic oscillations in microquasars, revealing a direct correlation between these oscillations and relativistic jets in black hole systems. The findings, published in Nature, provide new insights into the mysterious nature of black holes and open up new avenues for observing and studying black hole emissions.

via Global Times|

#black-hole #fast #microquasar