#sgra — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sgra, aggregated by home.social.
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ALMA Discovers “Space Tornadoes” Around the Milky Way’s Core!
Although the galaxy’s central molecular zone (CMZ) has long been known to be filled with swirling dust and gas molecules cycling through formation and destruction, the mechanism that drives this process has remained elusive. Molecules serve as tracers for various processes in molecular clouds, with silicon monoxide (SiO) particularly useful in detecting the presence of shock waves.
Using ALMA’s high resolution and sensitivity to map distinct spectral lines within the molecular clouds at the center of the Milky Way, the team led by Kai Yang (Shanghai Jiao Tong University) has delineated a new type of long, narrow filamentary structure at a significantly finer scale. The dynamic interaction between this turbulent environment and the slim filaments produced as shocks ripple through provides a more complete view of the cyclical processes within the CMZ.
Yang’s team reports it remains unknown how these slim filaments initially arise, but shock processes emerge as a likely explanation.
More info at https://www.almaobservatory.org/en/press-releases/alma-discovers-space-tornadoes-around-the-milky-ways-core/
#ALMA #AtacamaLargeMillimeterSubmillimeterArray #AtacamaLargeMillimeterArray #MilkyWay #CMZ #CentralMolecularZone #SgrA* #GalacticCenter
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ALMA Discovers “Space Tornadoes” Around the Milky Way’s Core!
Although the galaxy’s central molecular zone (CMZ) has long been known to be filled with swirling dust and gas molecules cycling through formation and destruction, the mechanism that drives this process has remained elusive. Molecules serve as tracers for various processes in molecular clouds, with silicon monoxide (SiO) particularly useful in detecting the presence of shock waves.
Using ALMA’s high resolution and sensitivity to map distinct spectral lines within the molecular clouds at the center of the Milky Way, the team led by Kai Yang (Shanghai Jiao Tong University) has delineated a new type of long, narrow filamentary structure at a significantly finer scale. The dynamic interaction between this turbulent environment and the slim filaments produced as shocks ripple through provides a more complete view of the cyclical processes within the CMZ.
Yang’s team reports it remains unknown how these slim filaments initially arise, but shock processes emerge as a likely explanation.
More info at https://www.almaobservatory.org/en/press-releases/alma-discovers-space-tornadoes-around-the-milky-ways-core/
#ALMA #AtacamaLargeMillimeterSubmillimeterArray #AtacamaLargeMillimeterArray #MilkyWay #CMZ #CentralMolecularZone #SgrA* #GalacticCenter
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ALMA Discovers “Space Tornadoes” Around the Milky Way’s Core!
Although the galaxy’s central molecular zone (CMZ) has long been known to be filled with swirling dust and gas molecules cycling through formation and destruction, the mechanism that drives this process has remained elusive. Molecules serve as tracers for various processes in molecular clouds, with silicon monoxide (SiO) particularly useful in detecting the presence of shock waves.
Using ALMA’s high resolution and sensitivity to map distinct spectral lines within the molecular clouds at the center of the Milky Way, the team led by Kai Yang (Shanghai Jiao Tong University) has delineated a new type of long, narrow filamentary structure at a significantly finer scale. The dynamic interaction between this turbulent environment and the slim filaments produced as shocks ripple through provides a more complete view of the cyclical processes within the CMZ.
Yang’s team reports it remains unknown how these slim filaments initially arise, but shock processes emerge as a likely explanation.
More info at https://www.almaobservatory.org/en/press-releases/alma-discovers-space-tornadoes-around-the-milky-ways-core/
#ALMA #AtacamaLargeMillimeterSubmillimeterArray #AtacamaLargeMillimeterArray #MilkyWay #CMZ #CentralMolecularZone #SgrA* #GalacticCenter
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ALMA Discovers “Space Tornadoes” Around the Milky Way’s Core!
Although the galaxy’s central molecular zone (CMZ) has long been known to be filled with swirling dust and gas molecules cycling through formation and destruction, the mechanism that drives this process has remained elusive. Molecules serve as tracers for various processes in molecular clouds, with silicon monoxide (SiO) particularly useful in detecting the presence of shock waves.
Using ALMA’s high resolution and sensitivity to map distinct spectral lines within the molecular clouds at the center of the Milky Way, the team led by Kai Yang (Shanghai Jiao Tong University) has delineated a new type of long, narrow filamentary structure at a significantly finer scale. The dynamic interaction between this turbulent environment and the slim filaments produced as shocks ripple through provides a more complete view of the cyclical processes within the CMZ.
Yang’s team reports it remains unknown how these slim filaments initially arise, but shock processes emerge as a likely explanation.
More info at https://www.almaobservatory.org/en/press-releases/alma-discovers-space-tornadoes-around-the-milky-ways-core/
#ALMA #AtacamaLargeMillimeterSubmillimeterArray #AtacamaLargeMillimeterArray #MilkyWay #CMZ #CentralMolecularZone #SgrA* #GalacticCenter
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ALMA Discovers “Space Tornadoes” Around the Milky Way’s Core!
Although the galaxy’s central molecular zone (CMZ) has long been known to be filled with swirling dust and gas molecules cycling through formation and destruction, the mechanism that drives this process has remained elusive. Molecules serve as tracers for various processes in molecular clouds, with silicon monoxide (SiO) particularly useful in detecting the presence of shock waves.
Using ALMA’s high resolution and sensitivity to map distinct spectral lines within the molecular clouds at the center of the Milky Way, the team led by Kai Yang (Shanghai Jiao Tong University) has delineated a new type of long, narrow filamentary structure at a significantly finer scale. The dynamic interaction between this turbulent environment and the slim filaments produced as shocks ripple through provides a more complete view of the cyclical processes within the CMZ.
Yang’s team reports it remains unknown how these slim filaments initially arise, but shock processes emerge as a likely explanation.
More info at https://www.almaobservatory.org/en/press-releases/alma-discovers-space-tornadoes-around-the-milky-ways-core/
#ALMA #AtacamaLargeMillimeterSubmillimeterArray #AtacamaLargeMillimeterArray #MilkyWay #CMZ #CentralMolecularZone #SgrA* #GalacticCenter
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SgrA* spin and mass estimates through the detection of multiple extremely large mass-ratio inspirals: https://arxiv.org/abs/2412.20738 -> Here's How We Could Measure the Mass of #SgrA* to Within One Solar Mass: https://www.universetoday.com/170418/heres-how-we-could-measure-the-mass-of-sgra-to-within-one-solar-mass/
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Nouvelles mesures de la masse étendue entourant Sgr A*
Par Éric Simon
https://www.ca-se-passe-la-haut.fr/
#VTLI #observatoire #ESO #SgrA* #trounoir #étoiles #S2 #masse #Galexie #Voielactée #science #astronomie #astrophysique -
#DerStandard:
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Bild des Schwarzen Lochs im Zentrum der Milchstraße soll fehlerhaft seinEin japanisches Forschungsteam äußert Zweifel an der berühmten Aufnahme. Der dunkle Fleck soll ein Artefakt sein. Fachleute verteidigen das Bild
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https://www.derstandard.at/story/3000000242231/bild-des-schwarzen-lochs-im-zentrum-der-milchstrasse-soll-fehlerhaft-sein29.10.2024
#Astronomie #Bildanalyse #EHT #EHTC #Japan #M87 #NAOJ #SagittariusA* #SchwarzesLoch #SgrA* #SMHB #VLBI
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#DerStandard:
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Bild des Schwarzen Lochs im Zentrum der Milchstraße soll fehlerhaft seinEin japanisches Forschungsteam äußert Zweifel an der berühmten Aufnahme. Der dunkle Fleck soll ein Artefakt sein. Fachleute verteidigen das Bild
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https://www.derstandard.at/story/3000000242231/bild-des-schwarzen-lochs-im-zentrum-der-milchstrasse-soll-fehlerhaft-sein29.10.2024
#Astronomie #Bildanalyse #EHT #EHTC #Japan #M87 #NAOJ #SagittariusA* #SchwarzesLoch #SgrA* #SMHB #VLBI
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#DerStandard:
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Bild des Schwarzen Lochs im Zentrum der Milchstraße soll fehlerhaft seinEin japanisches Forschungsteam äußert Zweifel an der berühmten Aufnahme. Der dunkle Fleck soll ein Artefakt sein. Fachleute verteidigen das Bild
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https://www.derstandard.at/story/3000000242231/bild-des-schwarzen-lochs-im-zentrum-der-milchstrasse-soll-fehlerhaft-sein29.10.2024
#Astronomie #Bildanalyse #EHT #EHTC #Japan #M87 #NAOJ #SagittariusA* #SchwarzesLoch #SgrA* #SMHB #VLBI
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#DerStandard:
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Bild des Schwarzen Lochs im Zentrum der Milchstraße soll fehlerhaft seinEin japanisches Forschungsteam äußert Zweifel an der berühmten Aufnahme. Der dunkle Fleck soll ein Artefakt sein. Fachleute verteidigen das Bild
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https://www.derstandard.at/story/3000000242231/bild-des-schwarzen-lochs-im-zentrum-der-milchstrasse-soll-fehlerhaft-sein29.10.2024
#Astronomie #Bildanalyse #EHT #EHTC #Japan #M87 #NAOJ #SagittariusA* #SchwarzesLoch #SgrA* #SMHB #VLBI
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#DerStandard:
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Bild des Schwarzen Lochs im Zentrum der Milchstraße soll fehlerhaft seinEin japanisches Forschungsteam äußert Zweifel an der berühmten Aufnahme. Der dunkle Fleck soll ein Artefakt sein. Fachleute verteidigen das Bild
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https://www.derstandard.at/story/3000000242231/bild-des-schwarzen-lochs-im-zentrum-der-milchstrasse-soll-fehlerhaft-sein29.10.2024
#Astronomie #Bildanalyse #EHT #EHTC #Japan #M87 #NAOJ #SagittariusA* #SchwarzesLoch #SgrA* #SMHB #VLBI
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Interesting, the new Miyoshi paper has some pretty strong words about the EHT data "suggesting that the EHT 2017 u-v coverage is insufficient for reliable imaging" or "possible that the data are corrupted to the degree that the shape [...] cannot be determined from the residual analysis of the closure quantity". They do not see a ring but a strong peak, possibly offset from the black hole location.
#BlackHole #EHT #SgrA*
https://astrodon.social/@cosmos4u@scicomm.xyz/113365898599370335 -
Unser Milchstraßenzentrum trägt den Namen Sgr A*. Was hat es mit der ungewöhnlichen Bezeichnung – samt Sternchen – auf sich?#SchwarzesLoch #SagittariusA* #SgrA* #ZentrumdesMilchstraßensystems #KosmologieAstrophysik #Radioastronomie #Radiowellen #Astronomie
Was bedeutet die Bezeichnung Sgr A* (»A Stern«)? -
Astronomen haben kürzlich ein weiteres potenzielles "fehlendes Glied" für die Entstehung des Weltalls in unserer galaktischen Nachbarschaft entdeckt: #SgrA https://winfuture.de/news,144042.html?utm_source=Mastodon&utm_medium=ManualStatus&utm_campaign=SocialMedia
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Weiteres mittelschweres Schwarzes Loch im Zentrum unserer Galaxie gefundenBisher sind im ganzen Universum nur rund zehn mittelschwere Schwarze Löcher entdeckt worden / Das nun identifizierte Schwarze Loch führt dazu, dass sich umliegende Sterne unerwartet geordnet innerhalb eines Sternhaufens bewegen. Eine Pressemitteilung der Universität zu Köln.
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https://www.raumfahrer.net/weiteres-mittelschweres-schwarzes-loch-im-zentrum-unserer-galaxie-gefunden/18.7.2024
#ALMA #Astronomie #Chandra #IRS13 #Milchstraße #SchwarzesLoch #SgrA* #Sternhaufen #VLT
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Weiteres mittelschweres Schwarzes Loch im Zentrum unserer Galaxie gefundenBisher sind im ganzen Universum nur rund zehn mittelschwere Schwarze Löcher entdeckt worden / Das nun identifizierte Schwarze Loch führt dazu, dass sich umliegende Sterne unerwartet geordnet innerhalb eines Sternhaufens bewegen. Eine Pressemitteilung der Universität zu Köln.
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https://www.raumfahrer.net/weiteres-mittelschweres-schwarzes-loch-im-zentrum-unserer-galaxie-gefunden/18.7.2024
#ALMA #Astronomie #Chandra #IRS13 #Milchstraße #SchwarzesLoch #SgrA* #Sternhaufen #VLT
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Weiteres mittelschweres Schwarzes Loch im Zentrum unserer Galaxie gefundenBisher sind im ganzen Universum nur rund zehn mittelschwere Schwarze Löcher entdeckt worden / Das nun identifizierte Schwarze Loch führt dazu, dass sich umliegende Sterne unerwartet geordnet innerhalb eines Sternhaufens bewegen. Eine Pressemitteilung der Universität zu Köln.
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https://www.raumfahrer.net/weiteres-mittelschweres-schwarzes-loch-im-zentrum-unserer-galaxie-gefunden/18.7.2024
#ALMA #Astronomie #Chandra #IRS13 #Milchstraße #SchwarzesLoch #SgrA* #Sternhaufen #VLT
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Weiteres mittelschweres Schwarzes Loch im Zentrum unserer Galaxie gefundenBisher sind im ganzen Universum nur rund zehn mittelschwere Schwarze Löcher entdeckt worden / Das nun identifizierte Schwarze Loch führt dazu, dass sich umliegende Sterne unerwartet geordnet innerhalb eines Sternhaufens bewegen. Eine Pressemitteilung der Universität zu Köln.
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https://www.raumfahrer.net/weiteres-mittelschweres-schwarzes-loch-im-zentrum-unserer-galaxie-gefunden/18.7.2024
#ALMA #Astronomie #Chandra #IRS13 #Milchstraße #SchwarzesLoch #SgrA* #Sternhaufen #VLT
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Weiteres mittelschweres Schwarzes Loch im Zentrum unserer Galaxie gefundenBisher sind im ganzen Universum nur rund zehn mittelschwere Schwarze Löcher entdeckt worden / Das nun identifizierte Schwarze Loch führt dazu, dass sich umliegende Sterne unerwartet geordnet innerhalb eines Sternhaufens bewegen. Eine Pressemitteilung der Universität zu Köln.
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https://www.raumfahrer.net/weiteres-mittelschweres-schwarzes-loch-im-zentrum-unserer-galaxie-gefunden/18.7.2024
#ALMA #Astronomie #Chandra #IRS13 #Milchstraße #SchwarzesLoch #SgrA* #Sternhaufen #VLT
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Goethe-Universität: Neues Bild vom Zentrum unserer MilchstraßeSpiralförmige Magnetfelder umgeben Schwarzes Loch Sagittarius A*. Eine Pressemitteilung der Goethe-Universität Frankfurt.
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https://www.raumfahrer.net/goethe-universitaet-neues-bild-vom-zentrum-unserer-milchstrasse/27.3.2024
#Astronomie #EHT #Jet #Magnetfeld #Milchstraße #SagittariusA* #SchwarzesLoch #SgrA*
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Nouvelle image de polarisation de Sgr A* dévoilée par l'EHT
à lire : https://www.ca-se-passe-la-haut.fr/2024/03/nouvelle-image-de-polarisation-de-sgr.html
à voir : https://youtu.be/fgw4Hs9on9I
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Newly published results from the Event Horizon Telescope suggest that all black holes - including the one at the center of our Milky Way galaxy - have some features in common, including strong magnetic fields in their surroundings and a jet of material blasting outward. They wouldn't be pleasant places to get close to, but I guess you knew that. https://cosmiclog.com/2024/03/27/scientists-map-magnetism-around-our-galaxys-black-hole/ #EHT #BlackHole #SgrA* #Space
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A new image from the Event Horizon Telescope (EHT) collaboration has uncovered strong and organized magnetic fields spiraling from the edge of the supermassive black hole Sagittarius A* (Sgr A*).
#blackhole #SgrA #SMBH #SagittariusA #EHT #astronomy #astrophysics #astrodon #physics #science #research #STEM #image #news
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Astronomers Unveil Strong Magnetic Fields Spiraling at the Edge of Milky Way’s Central Black Hole. #sgrA* https://eventhorizontelescope.org/blog/astronomers-unveil-strong-magnetic-fields-spiraling-edge-milky-way’s-central-black-hole
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Papers and press release for the #EventHorizonTelescope magnetic field maps of the disc around #SgrA* :
https://iopscience.iop.org/article/10.3847/2041-8213/ad2df0
https://iopscience.iop.org/article/10.3847/2041-8213/ad2df1 -
Polarimetry and astrometry of NIR flares as event horizon scale, dynamical probes for the mass of #SgrA*: https://www.aanda.org/articles/aa/full_html/2023/09/aa47416-23/aa47416-23.html -> Ultracompact - The #BlackHole at the center of our #MilkyWay: https://www.mpe.mpg.de/7968905/news20231025
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Donner un nouveau nom à Sgr A* !
Jusqu'au 7 octobre, participez à notre grand vote pour trouver un nom sympa pour le trou noir supermassif Sgr A* . A vous de choisir parmi les propositions de la communauté Ca Se Passe Là-Haut ! Rendez-vous ici :
https://forms.gle/cE1n42jm86AYnR6q9
#science #SgrA* #trounoir -
Jusqu'au 7 octobre, participez à notre grand vote pour trouver un nom sympa pour le trou noir supermassif Sgr A* . A vous de choisir parmi les propositions de la communauté Ca Se Passe Là-Haut ! Rendez-vous ici :
https://forms.gle/cE1n42jm86AYnR6q9
#science #SgrA* #trounoir -
Une équipe d'astrophysiciens s'est plongée dans des données archivées de la zone de Sgr A* dans le domaine du proche infra-rouge. Ils ont découvert qu'il s'était vraiment passé quelque chose d'atypique en 2019... L'étude est publiée dans The Astrophysical Journal Letters.
A lire : https://www.ca-se-passe-la-haut.fr/2023/09/sgr-un-episode-dactivite-accrue-en-2019.html
A écouter : https://casepasselahaut.lepodcast.fr/numero-1540-sgr-a-etoile-un-episode-dactivite-accrue-en-2019
#science #astrophysique #SgrA* #trounoir #astrophysics -
X-ray “light echoes” hint at outburst from Milky Way’s central black hole - Enlarge / This is the first image of Sgr A*, the supermassive black hol... - https://arstechnica.com/?p=1949885 #supermassiveblackholes #astrophysics #blackholes #astronomy #science #sgra*
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This 360° visualization based on data from Chandra and other telescopes shows ~25 Wolf-Rayet stars around the Milky Way's supermassive black hole Sgr A*.
The movie shows 2 simulations, each of which start around 350 years in the past and span 500 years. The 1st one shows Sgr A* in a calm state, the 2nd has a more violent Sgr A* that is expelling material, thereby preventing accretion of clumped material (yellow blobs) prominent in the 1st section.
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Dozens of massive Wolf-Rayet stars are known to orbit within 1.5 ly of the central super massive black hole Sgr A* in our own galaxy.
The fierce stellar winds of the WR stars collide with each other creating shock waves and clumps of gas and dust, which heat up to millions of degrees and emit X-rays. Some of these clumps spiral into the black hole. Some of the material gets ejected into interstellar space.
https://chandra.harvard.edu/photo/2018/gcenter360/
#WolfRayet #SgrA*
4/n -
The Swansong of the Galactic Center Source #X7 - An Extreme Example of Tidal Evolution near the Supermassive #BlackHole: https://iopscience.iop.org/article/10.3847/1538-4357/acb344 -> The Swansong Of A Cloud Approaching The Milky Way’s Supermassive Black Hole: https://keckobservatory.org/x7 #SgrA*
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The Swansong of the Galactic Center Source #X7 - An Extreme Example of Tidal Evolution near the Supermassive #BlackHole: https://iopscience.iop.org/article/10.3847/1538-4357/acb344 -> The Swansong Of A Cloud Approaching The Milky Way’s Supermassive Black Hole: https://keckobservatory.org/x7 #SgrA*
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The Swansong of the Galactic Center Source #X7 - An Extreme Example of Tidal Evolution near the Supermassive #BlackHole: https://iopscience.iop.org/article/10.3847/1538-4357/acb344 -> The Swansong Of A Cloud Approaching The Milky Way’s Supermassive Black Hole: https://keckobservatory.org/x7 #SgrA*
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The Swansong of the Galactic Center Source #X7 - An Extreme Example of Tidal Evolution near the Supermassive #BlackHole: https://iopscience.iop.org/article/10.3847/1538-4357/acb344 -> The Swansong Of A Cloud Approaching The Milky Way’s Supermassive Black Hole: https://keckobservatory.org/x7 #SgrA*
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Hackaday Links: May 15, 2022 - It may be blurry and blotchy, but it’s ours. The first images of the supermassive ... - https://hackaday.com/2022/05/15/hackaday-links-may-15-2022/ #hackadaycolumns #hackadaylinks #phasedarray #ultrasound #astronomy #blackhole #copperage #milkyway #spacelaw #slider #barrel #canada #haptic #mouth #sgra* #lips #m87* #ar #vr