Black holes are powerful cosmic engines. They provide the energy behind quasars and other active galactic nuclei (AGNs). This is due to the interaction of matter with its powerful gravitational and magnetic fields.
are powerful cosmic engines. They provide the energy behind quasars and other active galactic nuclei . This is due to the interaction of matter with its powerful gravitational and magnetic fields.Technically, a black hole doesn't have a magnetic field on its own, but the dense plasma surrounding the black hole as an accretion disk does. As the plasma swirls around the black hole, the charged particles within it generate an electrical current and magnetic field.
Our Sun reverses its magnetic field every 11 years, which drives the 11-year cycle of sunspots astronomers have observed since the 1600s. Even the Earth undergoes magnetic reversals every few hundred thousand years.In 2018, an automated sky survey found a sudden change in a galaxy 239 million light-years away. Known as 1ES 1927+654, the galaxy had brightened by a factor of 100 in visible light. Soon after its discovery, the Swift Observatory captured its glow in X-rays and ultraviolet.
At the same time, the intensity of light in visible and ultraviolet increased which suggested that parts of the black hole's accretion disk were getting hotter. Neither of these effects is what you'd expect with a tidal disruption event.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
See NASA's visualizations of black holes for Black Hole Week | Digital TrendsNASA has shared a selection of some of the best visualizations of blackholes, so you can get an idea of what these mind-bending phenomena are like.
Les mer »
Utah Black Chamber’s new CEO aims to ‘challenge and change the narrative’ for Black UtahnsIn her first appearance as CEO of the Utah Black Chamber, Sidni Shorter declared that she’s eager to show that Utah’s Black population may be small — only 1.5% of the state’s population — but it’s mighty.
Les mer »
Chicago Tonight: Black Voices, May 7, 2022 - Full ShowA grim Mother’s Day for moms of missing or murdered daughters, as they search for answers. The head of the Chicago Community Trust is heading to Spelman. And Black Americans in the Victorian era.
Les mer »
First black White House press secretary says she hopes to 'make people proud'Karine Jean-Pierre (KJP46) said she hopes to make people proud in her new role as the president’s top spokeswoman.
Les mer »
‘The View’s’ Sunny Hostin Lectures Co-Hosts: ‘Black Republicans’ Are an ‘Oxymoron’“I understand myself... I don't understand Black Republicans and I don't understand Latino Republicans,” a shrugging Sunny Hostin flatly told her 'The View' colleagues on Friday.
Les mer »
'It made me feel low': Black students urge passage of Crown Act to end hair discrimination'It stripped, like, a little bit of myself away': Black students urge passage of the Crown Act to end hair discrimination.
Les mer »