Category Astronomy/Space

Analogue black hole machine is pictured. Credit: The University of Nottingham

Scientists at the University of Nottingham have successfully simulated the conditions around black holes using a specially designed water bath. Their findings shed new light on the physics of black holes with the first laboratory evidence of the phenomenon known as the superradiance, achieved using water and a generator to create waves.

The work was led by Silke Weinfurtner from the School of Mathematical Sciences. In collaboration with an interdisciplinary team she designed and built the black hole ‘bath’ and measurement system to simulate black hole conditions...

This is an artist impression of chaotic magnetic field lines very near a newly emerging protostar. Credit: NRAO/AUI/NSF; D. Berry

A team of astronomers using ALMA has discovered a surprisingly weak and wildly disorganized magnetic field very near a newly emerging protostar. These observations suggest that the impact of magnetic fields on star formation is more complex than previously thought. The researchers used ALMA to map the magnetic field surrounding a young protostar dubbed Ser-emb 8, about 1,400 light-years away in the Serpens star-forming region. These observations are the most sensitive ever made of the small-scale magnetic field surrounding a protostar. They also provide important insights into the formation of low-mass stars like our own sun.

Previous observations with other tel...

1. A radio image of a triple star system forming within a dusty disk in the Perseus molecular cloud obtained by the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile. Credit: Bill Saxton, ALMA (ESO/NAOJ/NRAO), NRAO/AUI/NSF 2. Radio image of a very young binary star system, less than about 1 million years old, that formed within a dense core (oval outline) in the Perseus molecular cloud. All stars likely form as binaries within dense cores. Credit: SCUBA-2 survey image by Sarah Sadavoy, CfA

Did our sun have a twin when it was born 4.5 billion years ago? Almost certainly yes – though not an identical twin...

VLA image of radio-emitting mini-halo in the Perseus Cluster of galaxies. Radio emission in red; optical in white. Credit: Gendron-Marsolais et al.; NRAO/AUI/NSF; NASA; SDSS.

New details help unravel mystery of structure’s origin. Astronomers using the Karl G. Jansky Very Large Array (VLA) have discovered new details that are helping them decipher the mystery of how giant radio-emitting structures are formed at the center of a cluster of galaxies. The scientists studied a cluster of thousands of galaxies more than 250 million light-years from Earth, named the Perseus Cluster after the constellation in which it appears. Embedded within the center, the Perseus Cluster hosts a pool of superfast particles that emit radio waves, creating a radio structure known as a “mini-halo...