Nasal James Web Space Telescope (JWS) and Lunar x-ray observatory Combined their efforts to see the bullet cluster New wayTo enable scientists to map the dark matter of the cluster properly.
The close-ended imaging abilities of the web enabled astronomers to capture the highest wide images of the bullet cluster, including a pair of large-scale galaxy groups. With highly sensitive cameras of the web, researchers can see fennel farthest galaxies in the bullet cluster.
“With the comments of the web, we carefully measured the mass of the bullet cluster with the largest lensing dataset to get out of its outskirts from the core of Galaxy clusters,” says Sangjun Cha, the lead author of a new research paper. Published In this week The astrophizical journal lettersCha is a PHD student at the University of Yonsei in Seoul, South Korea.
“Web images dramatically improve what we can measure in this scene-indicating the status of invisible particles known as dark matter,” the new research paper co-writer Kail Finner and a subsidiary scientist in the IPAC in Caltech in Pasadeena, California.
As NASA explains, “All galaxies are made of stars, gas, dust and dark matter, which are tied together with gravity.” The bullet cluster is not just a galaxy, but a group of two “very large collections of galaxies”.
Galaxy clusters, which are massive and therefore have powerful gravitational forces, can act as gravity lenses that significantly increase the light of the background galaxies. The amount of gravity lensing, when compared to the amount of visual mass in a cluster, enables scientists to estimate the distribution of invisible dark matter.
“Gravity launching allows us to estimate the distribution of dark matter,” says James ji, Professor and Research Associate Professor and Research Associate at UC Davis in California.
It is helpful to think about gravitational lensing and dark matter using a metaphor of crystal-clier water and pebbles filled with pebbles, saying G.
“You cannot see the water until there is air, which causes waves,” scientists say. “Those waves deform the size of the pebble below, causing water to act like a lens.” This event occurs in the same phenomenon, where water represents dark matter, and in example pebbles represent background galaxies.
With the imaging abilities of the web, it is very easy to see and measure galaxies, including backgrounds, which means that it is possible to weight both visible and invisible substances (dark matter) in groups of galaxies. Researchers mapped and measured the collective light emitted by intraclaster stars. These are stars who are no longer obliged to a personal galaxy.
“We confirmed that even in a highly dynamic environment such as intraclaster light bullet clusters, there may be a reliable tragedy of dark matter,” Chai says. If intraclaster stars are not bound to galaxies, and are bound to dark substances instead, scientists can learn much about dark matter and its distribution.
Image Credit: NASA, ESA, CSA, STSCI, CXC; Science: James ji (Yoni University/UC Davis), Sangjun Cha (University of Yoni), Kyle Finner (IPAC in Caltech). Video Credit: NASA, ESA, CSA, Joseph Depasquel (STSCI)
