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radio astronomy

This tag is associated with 45 posts

Bending Under Pressure: Bent Jets in Galaxy Clusters

The diffuse gas contained within galaxy clusters can dramatically affect the galaxies moving within it. This includes bending the jets coming out of active galactic nuclei in galaxy clusters. The authors in today’s Astrobite report on extremely bent jets recently discovered in galaxy NGC 1272.

Arecibo Detects a Fast Radio Burst

A mysterious Fast Radio Burst (FRB) from beyond the galaxy has been detected at Arecibo. This is the first FRB discovered outside of Parkes Observatory, giving greater credence to the astronomical nature of these signals.

A Fast Radio Burst From Close to Home?

Astronomers are hearing a new type of radio transient, but no one knows where they come from and how they are created. This paper suggests one of the six documented Fast Radio Bursts detected so far originated close to home, within our own galaxy.

Do Fast Radio Bursts Come from Flaring Stars?

Title: Fast Radio Bursts May Originate from Nearby Flaring Stars Authors: Abraham Loeb, Yossi Shvartzvald, Dan Maoz First Author’s Institution: Institute for Theory and Computation, Harvard University Paper Status: MNRAS, in press One of the most intriguing discoveries in radio astronomy in recent years has been the discovery of Fast Radio Bursts (FRBs).  Originally called Lorimer bursts after the […]

New Evidence of an Asteroid Encountering a Pulsar

Title: Evidence of an Asteroid Encountering a Pulsar Authors: P. R. Brook, A. Karastergiou, S. Buchner, S. J. Roberts, M. J. Keith, S. Johnson, R. M. Shannon First Author’s Institution:  University of Oxford Pulsars- neutron stars formed during supernovae explosions- are often considered the “precision clocks” of radio astronomy. This is because of two fundamental properties observed from […]

Unsolved Problems: Magnetic Field Evolution in Galaxies

Magnetic fields are ubiquitous in the Universe. Everything including stars, solar systems, galaxies, galaxy clusters, and even large scale voids have magnetic fields. We know magnetic fields exist in the Universe, but have had a challenging time uncovering both their origin and evolution. Today’s astrobite discusses a recent paper exploring how magnetic fields evolved in young galaxies through computational simulations. It is one step further in unlocking the history of magnetic fields in our Universe.

Giant Space Masers

Giant clouds of molecules in space provide the gain material for astrophysical masers, emitting microwave radiation by stimulated emission. These bright sources can be used to determine extragalactic distances and black hole masses. This paper reports on a search for new extragalactic water masers with the Very Long Baseline Array, and reports on the discovery of four sources in 37 objects searched.

Lessons from radio transits

We are used to thinking about planet transits in visible wavelengths. What can we learn from planet transits in the radio band? Today, we discuss what these transits might tell us about the magnetic activity and the atmosphere of a star.

Jets in a post-AGB envelope

The authors present the first direct evidence of a jet shaping the circumstellar envelope of a post-AGB star.

Imaging a CO snow line with ALMA

Astronomers imaged a snow line in a protoplanetary disk with ALMA – a step towards a better understanding of the theory of planet formation.

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