Category Astronomy/Space

CSIRO Telescope detects unprecedented Behaviour from Nearby Magnetar

Artist’s impression of a magnetar with magnetic field and powerful jets. ©  CSIRO

Researchers using Murriyang, CSIRO’s Parkes radio telescope, have detected unusual radio pulses from a previously dormant star with a powerful magnetic field.

New results published today in Nature Astronomy describe radio signals from magnetar XTE J1810-197 behaving in complex ways.

Magnetars are a type of neutron star and the strongest magnets in the Universe. At roughly 8,000 light years away, this magnetar is also the closest known to Earth.

Most are known to emit polarised light, though the light this magnetar is emitting is circularly polarised, where the light appears to spiral as it moves through space.

Dr Marcus Lower, a postdoctoral fellow at Australia’s national science agency...

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Researchers Enable Detection of Remarkable Gravitational-Wave Signal

coalescence and merger of a lower mass-gap black hole with a neutron star
The coalescence and merger of a lower mass-gap black hole (dark grey surface) with a neutron star with colours ranging from dark blue (60 grams per cubic centimetre) to white (600 kilograms per cubic centimetre) and highlight the strong deformations of the low-density material of the neutron star. Credit: I. Markin (Potsdam University), T. Dietrich (Potsdam University and Max Planck Institute for Gravitational Physics), H. Pfeiffer, A. Buonanno (Max Planck Institute for Gravitational Physics).

Researchers from the University of Portsmouth’s Institute of Cosmology and Gravitation (ICG) have helped to detect a remarkable gravitational-wave signal, which could hold the key to solving a cosmic mystery.

The discovery is from the latest set of results announced by the LIGO-Virgo-KAGRA co...

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Inexplicable Flying Fox found in Hydra Galaxy Cluster

GMRT radio image of the central region of the Hydra Cluster. The “head” of the Flying Fox discovered this time points to the south-west (lower right). The Flying Fox has a “wingspan” of 220,000 light years. The white contours in the background show the X-ray surface brightness as observed by ESA’s XMM-Newton satellite.(Credit: Kohei Kurahara)

High sensitivity radio observations have discovered a cloud of magnetized plasma in the Hydra galaxy cluster. The odd location and shape of this plasma defy all conventional explanations. Dubbed the Flying Fox based on its silhouette, this plasma will remain a mystery until additional observations can provide more insight.

A team led by Kohei Kurahara at the National Astronomical Observatory of Japan analyzed observations from the Gia...

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The Universe’s Accelerated Expansion Might be Slowing Down

First results from DESI make the most precise measurement of our expanding universe

The universe is still expanding at an accelerating rate, but it may have slowed down recently compared to a few billion years ago, early results from the most precise measurement of its evolution yet suggested Thursday.

While the preliminary findings are far from confirmed, if they hold up it would further deepen the mystery of dark energy—and likely mean there is something important missing in our understanding of the cosmos.

These signals of our universe’s changing speeds were spotted by the Dark Energy Spectroscopic Instrument (DESI), which is perched atop a telescope at the Kitt Peak National Observatory in the US state of Arizona.

Each of the instrument’s 5,000 fiber-optic robots can observe a galaxy for 20 minutes, allowing astronomers to chart what they have called t...

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