Tag Archive for 'Sunyaev-Zel’dovich effect'

This artist’s concept shows what happened when two massive clusters of galaxies, collectively known as MACS J0018.5+1626, collided: the dark matter in the galaxy clusters (blue) sailed ahead of the associated clouds of hot gas, or normal matter (orange); both dark matter and normal matter feel the pull of gravity, but only the normal matter experiences additional effects like shocks and turbulence, which slow it down during collisions. Image credit: W.M. Keck Observatory / Adam Makarenko.

Astronomers See Decoupling of Dark and Normal Matter in Collision of Two Galaxy Clusters

Aug 1, 2024 by News Staff

The two galaxy clusters, known collectivity as MACS J0018.5+1626, each contain thousands of galaxies and are located billions of light-years away from...

This image shows the Spiderweb protocluster, seen at a time when the Universe was only 3 billion years old. Image credit: ESO / Di Mascolo et al. / NASA / ESA / Hubble / H. Ford.

ALMA Detects Huge Reservoir of Hot Gas in Very Distant Galaxy Protocluster

Mar 29, 2023 by News Staff

The galaxy protocluster is question is forming around the recently-discovered Spiderweb galaxy (also known as MRC 1138-262 or PKS 1138-262), an object...

Astronomers combined data from ALMA’s 7- and 12-m antennas to produce the sharpest possible image of RX J1347.5–1145, the center of which shows up here in the dark ‘hole’ in the ALMA observations. The energy distribution of the CMB photons shifts and appears as a temperature decrease at the wavelength observed by ALMA, hence a dark patch is observed in this image at the location of the cluster. The optical image of RX J1347.5–1145 was taken with Hubble. Image credit: NASA / ESA / Hubble / T. Kitayama, Toho University / ALMA.

Astronomers Use ALMA to Hunt for Universe’s Oldest Light

Feb 20, 2017 by News Staff

This image shows the first measurements of the so-called Sunyaev-Zel’dovich effect (SZE) from the Atacama Large Millimeter/submillimeter Array. Astronomers...

In an artist’s conception, heated galactic wind shown in the hazy portion of the picture emanates from the bright quasar at the edge of a black hole, scattering dust and gas. If allowed to cool, that dust and gas would begin to form stars. Image credit: Johns Hopkins University.

Ancient Quasars Slowed Star Formation 11 Billion Years Ago, Scientists Say

Mar 24, 2016 by News Staff

Researchers appear to have an explanation for a longstanding question in astrophysics: why did the pace of star formation in the Universe slow down 11...