All articles tagged with #radio halo
NASA's Chandra telescope discovered a massive galaxy cluster, PLCK G287.0+32.9, wrapped in a 20 million light-year-wide energized particle cocoon, likely energized by shockwaves and turbulence, revealing new insights into cosmic energy processes and magnetic fields.
Astronomers discovered the largest-ever cloud of energetic particles around a galaxy cluster, stretching nearly 20 million light-years, driven by turbulence and shockwaves rather than galaxies, challenging existing models and revealing new insights into cosmic magnetic fields and energy transfer in the universe.
Astronomers have discovered the largest known cloud of energetic particles around a galaxy cluster, spanning nearly 20 million light-years, energized by shockwaves and turbulence rather than nearby galaxies, challenging existing theories and offering new insights into cosmic magnetic fields.
Astronomers have detected a new radio halo in the massive galaxy cluster ACT-CL J0329.2-2330, using L-band and UHF-band observations with the MeerKAT radio telescope. This discovery, reported in a research paper, marks the highest redshift halo detected so far and suggests rapid magnetic field amplification in galaxy clusters at high redshifts. The radio halo in ACT-CL J0329 exhibits a smooth, regular morphology and has a flux density of 3.44 and 6.11 mJy at L and UHF-band, respectively, indicating its luminosity comparable to halos found in nearby massive galaxy clusters.
European astronomers using the LOFAR telescope have discovered a new component, named H3, in the radio halo of the nearby galaxy cluster Abell 2142. The radio halo is a diffuse region of radio emission found at the center of galaxy clusters. The discovery of H3 provides further insights into the structure of the halo and its relationship with the X-ray thermal distribution of the intracluster medium. The researchers propose two hypotheses for the origin of H3, suggesting it may be the result of an old energetic merger or turbulent re-acceleration induced by ongoing minor mergers.