Tag

Xmm Newton

All articles tagged with #xmm newton

astronomy1 month ago•141 min saved

Fading radio lobes reveal the final stage of supermassive black hole activity

Astronomers have identified a new population of 'remnant' radio galaxies where the supermassive black hole engines powering vast plasma jets have ceased activity. By analyzing 14 candidates in the XMM-Newton Large-Scale Structure field using the MeerKAT, VLA, and LOFAR telescopes, researchers observed how radio emissions fade as particles lose energy without replenishment from active galactic nuclei. This discovery provides a critical window into the end-stage evolution of radio galaxies, complementing recent studies on rapid black hole growth and accretion phases in the early universe.

via Space|

#astronomy #black-holes #galaxy-evolution

space3 months ago•23 min saved

Milky Way's Outer Spiral Arms Extend Further Than Thought, Say X-Ray Echoes

Astronomers used X-ray echoes from rare gamma-ray bursts observed by NASA’s Chandra and ESA’s XMM-Newton to geometrically measure dust rings in the Milky Way’s spiral arms, finding the outer arms extend farther than previously known (one distant dust cloud about 3,500 light-years across). This geometry-based method, not dependent on the galaxy’s rotation, could prompt revisions to estimates of the Milky Way’s mass and structure, though its data are limited by the rarity of bright gamma-ray bursts.

via New York Post|

#astronomy #chandra #dust

science3 months ago•4 min saved

Milky Way's spiral arms stretch farther into space, new measurements show

Astronomers using X-ray data from NASA’s Chandra and ESA’s XMM-Newton measure dust-ring geometry created by distant gamma-ray bursts to map the Milky Way’s outer spiral arms, finding the arm in the far reaches is about 3,500 light-years wide and implying a potential update to the Galaxy’s size and mass; the method offers a geometry-based alternative to rotation-based estimates but relies on rare bright bursts, so more observations are needed.

via Fox News|

#chandra-x-ray-observatory #gamma-ray-bursts #milky-way

science-and-exploration11 months ago•5 min saved

Scientists Detect First Explosive Burst from Nearby Star

Astronomers have confirmed the first observation of a coronal mass ejection (CME) from a star other than the Sun, using ESA's XMM-Newton and LOFAR telescopes. The CME, originating from a red dwarf star 130 light-years away, was extremely fast and dense, capable of stripping away planetary atmospheres, which has significant implications for the habitability of planets orbiting active stars.

via European Space Agency|

#cme #exoplanets #science-and-exploration

science1 year ago•3 min saved

ESA's XMM-Newton Discovers Large-Scale Cosmic Web of Missing Matter

Astronomers using ESA's XMM-Newton and JAXA's Suzaku telescopes have discovered a massive filament of hot gas, bridging four galaxy clusters and potentially explaining some of the universe's missing baryonic matter, aligning with cosmological models and shedding light on the cosmic web's structure.

via theregister.com|

#cosmic-web #filaments #galaxy-clusters

astronomy2 years ago•2 min saved

"Astronomers Uncover New Cataclysmic Variable"

Astronomers have discovered a new magnetic cataclysmic variable system, likely of the polar type, designated as XMM J152737.4-205305.9 (or XMM 152737). By analyzing data from ESA's XMM-Newton and Gaia satellites, the system was found to exhibit characteristics consistent with polars, including a strong magnetic field, synchronous rotation, and prominent emission lines of hydrogen and helium. Further observations are needed to determine the origin of observed dips and confirm its polar classification.

via Phys.org|

#astronomers #astronomy #cataclysmic-variable

astronomy2 years ago•3 min saved

"Galactic Tantrums: Unraveling the Mysteries of Black Hole Winds"

Researchers have observed a supermassive black hole in the distant galaxy Markarian 817 expelling a sustained gust of ultrafast cosmic wind, which cleared a region around the black hole of dust and hindered star formation for several hundred days. This finding suggests that black holes can significantly reshape the galaxies they inhabit, shedding light on the process of galaxy formation. The study, conducted using data from NASA's Swift Observatory and the European Space Agency's XMM-Newton mission, could also explain the peculiar bald patch surrounding the Milky Way's own supermassive black hole, Sagittarius A*.

via Livescience.com|

#astronomy #black-hole #galaxy-evolution

science-and-exploration2 years ago•4 min saved

"Rampaging Black Hole: XMM-Newton Observations Uncover Unprecedented Activity"

ESA's XMM-Newton has observed a black hole, located in the galaxy Markarian 817, emitting ultra-fast winds that are disrupting the formation of new stars in its vicinity. This discovery sheds light on the intricate relationship between black holes and galaxies, suggesting that black holes may have a more significant impact on their host galaxies than previously thought. The study, led by undergraduate researcher Miranda Zak, utilized data from XMM-Newton's EPIC instrument, as well as observations from NASA's Swift and NuSTAR missions, to uncover this phenomenon.

via European Space Agency|

#astronomy #black-holes #galaxy-evolution

astronomy2 years ago•6 min saved

"Uncovering a Galactic Fossil: Insights into Universe's Evolution"

NASA scientists have discovered a cosmic fossil created by a supermassive black hole eruption over 5 million years ago in the spiral galaxy NGC 4945. Using the XMM-Newton space telescope, they observed X-rays outlining cold gas clouds, providing insight into how supermassive black holes influence their surroundings and guide galactic evolution. The galaxy, undergoing intense star formation, exhibits features of an active galactic nucleus, and the team theorizes that the black hole's eruption triggered this starburst period. Further observations will focus on understanding the black hole's influence on the galaxy's evolution and its potential role in quenching star formation.

via Space.com|

#active-galactic-nucleus #astronomy #cosmic-fossil

astronomy3 years ago•2 min saved

"Unveiling the Mysteries of Galaxy Cluster G113: European Astronomers Lead the Way"

European astronomers have used ESA's XMM-Newton satellite and the Low-Frequency Array (LOFAR) to study the galaxy cluster PSZ2G113.91-37.01 (G113). The observations revealed that G113 is undergoing a merger and confirmed the presence of a radio halo and two radio relics. The study also identified a cold front and a cold region within the cluster. Further analysis found a strong correlation between X-ray and radio emissions in the halo region, while an anti-correlation was observed in the relic region. The researchers propose further observations to understand the physical processes behind these findings.

via Phys.org|

#astronomy #cosmology #galaxy-cluster