Astronomers using data from the ongoing VLA Sky Survey (VLASS) have found a number of distant galaxies with supermassive black holes at their cores that have launched powerful, radio-emitting jets of material within the past ...
Astronomy
Nov 19, 2020
4
4673
For galaxies, as for people, living in a crowd is different from living alone. Recently, astronomers used the National Science Foundation's Karl G. Jansky Very Large Array (VLA) to learn how a crowded environment affects ...
Astronomy
Nov 12, 2020
0
170
Squids and other cephalopods use a form of jet propulsion that is not well understood, especially when it comes to their hydrodynamics under turbulent flow conditions. Discovering their secrets can help create new designs ...
General Physics
Nov 3, 2020
0
44
Using the Very Long Baseline Array (VLBA), astronomers have performed high-resolution observations of the blazar PKS 1749+096. Results of this observational campaign, presented in a paper published October 23 on arXiv.org, ...
Some supermassive black holes launch powerful beams of material, or jets, while others do not. Astronomers may now have identified why.
Astronomy
Oct 15, 2020
2
211
When an optical fiber is immersed in liquid, a high-temperature, high-speed jet is discharged. Researchers expect this to be applied to medical treatment in the future. Now, a research team from Russia and Japan has explored ...
Optics & Photonics
Oct 12, 2020
0
13
Insight-HXMT, China's first space X-ray astronomical satellite, has discovered a low-frequency quasi-periodic oscillation (QPO) above 200 kiloelectron volts (keV) in a black hole binary, making it the highest energy low-frequency ...
Astronomy
Sep 22, 2020
1
164
Scientists at Tomsk Polytechnic University jointly with international colleagues have found a simple technique to dynamically curve a photonic jet, turning it into a photonic hook. The method was published in Optics Letters. ...
Optics & Photonics
Sep 15, 2020
0
10
Solar jets are a common phenomenon in the solar atmosphere. They mainly appear as transient collimated plasma ejections. Some studies have shown that jets may play an important role in heating the corona and initiating solar ...
Astronomy
Sep 15, 2020
0
65
It is presently challenging to efficiently cool enclosed spaces such as stationary automobiles that trap heat via the greenhouse effect. In a new report in Science Advances, Se-Yeon Heo and a team of scientists in materials ...
