An article published in the journal “Nature Astronomy” reports the identification of the brightest and most voracious quasar discovered so far, cataloged as J0529-4351. A team of researchers used various instruments to understand that it wasn’t a nearby star but a primordial quasar we see as it looked over 12 billion years ago.
The researchers estimated that the mass of the supermassive black hole that powers it is about 17 billion times the Sun’s, and it’s devouring materials around it at a very high rate, about the mass of the Sun every day. The study of this record-breaking primordial quasar can help reconstruct the history of the early universe and the processes that led to it becoming what it is today.
The images of 19 spiral galaxies captured by the James Webb Space Telescope have been released as part of the PHANGS (Physics at High Angular resolution in Nearby GalaxieS) project. These are galaxies up to 65 million light-years away that we see face-on, and this allows to better observe the stars inside them, an optimal situation for a project focused on star formation processes. Webb’s NIRCam (Near-Infrared Camera) and MIRI (Mid-Infrared Instrument) instruments were employed to cover the near and mid-infrared resulting in many new details.
An image captured by the Hubble Space Telescope shows LEDA 60847, a group of interacting galaxies. The largest galaxy has an active galactic nucleus (AGN) with a supermassive black hole surrounded by materials that are heated to the point of generating the electromagnetic emissions behind its luminosity. This galaxy is interacting with its neighbors and in a very long time, they will form a single larger galaxy.
An article in publication in “The Astrophysical Journal” reports the results of observations of early galaxies that show strange shapes, decidedly different from the ones we’re used to and compared to bananas and even breadsticks. A team of researchers led by Viraj Pandya of Columbia University used observations conducted with the James Webb Space Telescope as part of the CEERS survey from which they obtained images of galaxies dating back to a period between 600 million and 6 billion years after the Big Bang.
An article published in the journal “Proceedings of the Japan Academy, Series B, Physical and Biological Sciences” reports a study on the star cataloged as S0-6 which indicates that it formed in another galaxy and only over time reached the center of the Milky Way. Since 2014, a team of researchers led by Shogo Nishiyama of Miyagi University of Education in Japan has been studying various stars that now orbit Sagittarius A*, or simply Sgr A*, the supermassive black hole at the center of the Milky Way.