Tag

Radio Galaxies

All articles tagged with #radio galaxies

science7 days ago•8 min saved

Porphyrion’s 23-Million-Light-Year Jet Rewrites Galactic Scale

Astronomers using LOFAR have identified Porphyrion, a radio galaxy whose jets span about 23 million light-years (7 Mpc)—roughly 140 Milky Ways end-to-end—making it one of the largest known galactic-origin structures. The colossal jets suggest prolonged black-hole feeding over ~1 billion years and may influence the cosmic web’s temperature and magnetic fields, though newer discoveries like TXS 0033+252 have since surpassed its size, hinting that even bigger jets await detection.

via ScienceAlert|

#cosmic-web #galactic-jets #lofar

obituaries1 year ago•6 min saved

Sir Francis Graham-Smith's Radio Astronomy Reveals Universe's Origin

Sir Francis Graham-Smith, a pioneering radio astronomer and former Astronomer Royal, significantly contributed to our understanding of the universe's origins by measuring distant radio galaxies and studying pulsars, despite facing funding cuts and public relations challenges in British astronomy. He was knighted and celebrated for his groundbreaking research that helped disprove the steady state theory and demonstrated the universe's beginning.

via The Telegraph|

#obituaries #radio-astronomy #radio-galaxies

science1 year ago•4 min saved

Galaxy Cluster Exhibits Enigmatic 200,000-Light-Year Cosmic Tendrils

Astronomers captured the deepest, highest-resolution image of galaxy cluster Abell 2255, revealing mysterious, filament-rich radio tendrils over 200,000 light-years long, which are likely dragged out by turbulent motions within the cluster, providing new insights into the behavior of supermassive black hole jets and intergalactic gas.

via Space|

#abell-2255 #cosmic-tendrils #galaxy-cluster

astronomy2 years ago•6 min saved

The Hunt for Missing Black Holes in the Early Universe

Astronomers are using machine learning algorithms to search for superluminous galaxies with massive black holes at their core in the early universe. The algorithm, trained with images of galaxies obtained in various wavelengths, predicts radio galaxies four times more effectively than conventional methods. By analyzing the machine learning models, researchers hope to gain insights into the physical phenomena occurring in these galaxies. The development of advanced techniques for processing and analyzing vast amounts of astronomical data is crucial as future sky surveys with radio telescopes are expected to reveal billions of galaxies.

via Phys.org|

#astronomy #black-holes #early-universe