#KnowledgeByte: #Abell209 is a massive #Galaxy #Cluster located in the constellation Cetus, approximately 2.8 to 3 billion light-years from Earth.
The cluster contains over 100 galaxies and its immense mass warps spacetime, allowing astronomers to study dark matter through a phenomenon called #Gravitational #Lensing.
https://knowledgezone.co.in/posts/Abell-209-and-Spacetime-Warping-69160164eeb3621d436d25de
The shape of this galaxy admittedly appears to be somewhat bizarre, so confusion would be forgiven. This is due to a cosmic phenomenon called #Gravitational #Lensing.
The gravitational influence of a massive galaxy cluster called SDSS J1110+6459 is causing the surrounding space-time to bend and warp, affecting the passage of any nearby light
https://knowledgezone.co.in/trends/browser?topic=Gravitational-Lens
#Abell209 is a massive #Galaxy #Cluster located in the constellation Cetus, approximately 2.8 to 3 billion light-years from Earth.
The cluster contains over 100 galaxies and its immense mass warps spacetime, allowing astronomers to study dark matter through a phenomenon called #Gravitational #Lensing.
https://knowledgezone.co.in/posts/Abell-209-and-Spacetime-Warping-69160164eeb3621d436d25de
Der ehemalige OB-Kandidat Cremer, protegiert von der Dortmunder Wirtschaft, hatte Ostermann für seine Kampagne eingeladen. Falls jemand noch fragt, wo Cremer politisch zu verorten ist.
#nonazisdo #wilo #lensing #rn #geldadel
https://www.tagesschau.de/faktenfinder/ostermann-deutsche-polizeigewerkschaft-100.html
HerS 020941.1+001557 is the designation for a very distant galaxy that appears as a dramatic #Einstein #Ring due to a phenomenon called #Gravitational #Lensing.
Its light, emitted 11 billion years ago, has been bent and magnified by the gravitational field of a closer, massive elliptical galaxy (SDSS J020941.27+001558.4) located between HerS 020941.1+001557 and Earth.
in the #arXiv
J1721+8842: The first Einstein zig-zag lens
by Frédéric Dux and co-authors
https://arxiv.org/abs/2411.04177
#Cosmology #galaxies #quasars #lensing #astronomy #astrophysics #astrodon #JWST #Webb #telescope #space #science #STEM
We report the discovery of the first example of an Einstein zig-zag lens, an extremely rare lensing configuration. In this system, J1721+8842, six images of the same background quasar are formed by two intervening galaxies, one at redshift $z_1 = 0.184$ and a second one at $z_2 = 1.885$. Two out of the six multiple images are deflected in opposite directions as they pass the first lens galaxy on one side, and the second on the other side -- the optical paths forming zig-zags between the two deflectors. In this letter, we demonstrate that J1721+8842, previously thought to be a lensed dual quasar, is in fact a compound lens with the more distant lens galaxy also being distorted as an arc by the foreground galaxy. Evidence supporting this unusual lensing scenario includes: 1- identical light curves in all six lensed quasar images obtained from two years of monitoring at the Nordic Optical Telescope; 2- detection of the additional deflector at redshift $z_2 = 1.885$ in JWST/NIRSpec IFU data; and 3- a multiple-plane lens model reproducing the observed image positions. This unique configuration offers the opportunity to combine two major lensing cosmological probes: time-delay cosmography and dual source-plane lensing since J1721+8842 features multiple lensed sources forming two distinct Einstein radii of different sizes, one of which being a variable quasar. We expect tight constraints on the Hubble constant and the equation of state of dark energy by combining these two probes on the same system. The $z_2 = 1.885$ deflector, a quiescent galaxy, is also the highest-redshift strong galaxy-scale lens with a spectroscopic redshift measurement.
#DidYouKnow: #Gravitational #Lensing occurs when a massive celestial body - such as a galaxy cluster - causes a sufficient curvature of spacetime for the path of light around it to be visibly bent, as if by a lens.
The body causing the light to curve is accordingly called a gravitational lens.
https://knowledgezone.co.in/trends/explorer?topic=Gravitational-Lens
#GeraintLewis - The #DarkSide of the #Universe
https://www.youtube.com/watch?v=vxl5Ov2xyKE
#Philosophy #PhilosophyOfScience #Science #PhilosophyOfCosmology #Cosmology #BigBang #DarkMatter #StandardModel #LambdaCDM #CDM #CMB #CosmicMicrowaveBackground #Gravity #GravitationalLensing #MOND #Lensing #DarkEnergy #Astronomy #Astrophysics #Physics #ParticlePhysics #CloserToTruth #RobertKuhn
Early South Pole Telescope data has found that Einstein was right… again
✍️ by Jacinta Bowler for Cosmos Magazine
https://cosmosmagazine.com/space/south-pole-telescope-general-relativity/
#SPTelescope #physics #Einstein #AmundsenScott #SouthPole #Station #Antarctica #telescope #Measurement #gravitationallensing #lensing #CMB #map #temperature #polarization #relativity #generalrelativity #universe #astronomy #astrophysics #astrodon #space #science #research #STEM #CosmosMagazine #cosmos #magazine #cosmicmicrowavebackground
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Jim Donegan 🎵 ✅