WebJuly 12, 2000 -- NASA's latest observatory, designed to see the most violent and stunning cosmic phenomena, captured something unexpected. The Chandra X-ray Observatory, orbiting in space about one-third of the way to the moon, saw the first-ever flare from what's known as a brown dwarf, or failed star. The flare star Wolf 359 is another near neighbor (2.39 ± 0.01 parsecs). This star, also known as Gliese 406 and CN Leo, is a red dwarf of spectral class M6.5 that emits X-rays. It is a UV Ceti flare star, and has a relatively high flare rate. See more A flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes. It is believed that the flares on flare stars are analogous to solar flares in that they are due to See more • Solar flare – Eruption of electromagnetic radiation in the atmosphere of the Sun • Superflare – Strong explosion observed on stars • Variable star – Star whose brightness as seen from Earth fluctuates See more Flare stars are intrinsically faint, but have been found to distances of 1,000 light years from Earth. On April 23, 2014, NASA's Swift satellite detected the strongest, hottest, and longest … See more The most powerful stellar flare detected, as of December 2005, may have come from the active binary II Peg. Its observation by Swift suggested the presence of hard X … See more • UV Ceti and the flare stars, Autumn 2003 Variable Star Of The Season prepared by Dr. Matthew Templeton, AAVSO (www.aavso.org) • Stellar Flares - D. Montes, UCM. See more
Red Dwarf Star
WebFlares are typically accompanied by brightening of the emission line spectra of the star, particularly of the Balmer series of hydrogen, and the appearance of ionized helium lines as well. Flares have also been … WebApr 13, 2024 · Solar flares are birthed from large loops of plasma, or ionized gas, on the sun’s surface. These loops, known as corona loops, form along invisible magnetic field lines that get twisted by the ... can kidney stones cause bladder leakage
Do white dwarfs produce stellar wind? If not, why is that?
Web海豚座HU，又稱Gliese 791.2，是一個位於海豚座的聯星系統，由兩顆紅矮星組成。 視星等為13.07 。 視差為113.4mas ，它距離太陽系約24.37光年（7.5秒差距）。. 海豚座HU是一顆聯星，週期明確，為538.6天。軌道是通過天體測量和光譜觀測得出的，儘管由於預計的旋轉速度很高，這很難做到。 WebOct 18, 2024 · New observations by two Arizona State University astronomers using the Hubble Space Telescope have caught a red dwarf star in a violent outburst, or superflare. The blast of radiation was more powerful than any such outburst ever detected from the sun and would likely affect the habitability of any planets orbiting it. WebSep 13, 2024 · Along with their tendency to host rocky planets, like Proxima b or TRAPPIST-1s seven planet system, this has made them a key part in humanity's search for habitable exoplanets. Beyond being prone to flare-ups, red dwarfs can also be deceptive in how they go about doing it. fiwq