World map small

Super sharp images reveal a possible hypernebula powered by a source of fast radio bursts

Submitted by evlbi_beheer on Wed, 01/10/2024 - 15:27

We have confirmed the association of a second FRB source, called FRB 20190520B, with a potential hypernebula. This FRB was discovered using the 500-m FAST telescope in China and appeared to be associated with a more constant source of radio waves. This more constant source of radio waves hints at a hypernebula powered by the same object that makes the bright radio bursts.

Planetary Radio Interferometry and Doppler Experiment: VLBI studies in the Solar System

Submitted by evlbi_beheer on Wed, 01/10/2024 - 15:05

Leonid Gurvits


A perfect lift-off of the Ariane-5 rocket from the European spaceport Kourou in French Guiana on 14 April 2023. The launch marked the beginning of a ~10-year JUICE mission focused on studies of the Galilean Moons of Jupiter. © Arianespace


Filamentary structures as the origin of blazar jet radio variability

Submitted by evlbi_beheer on Wed, 01/10/2024 - 12:38

Antonio Fuentes

Supermassive black holes at the center of active galactic nuclei (AGN) power some of the most luminous objects in the Universe). In particular, blazars are a subclass of AGNs where a relativistic jet of plasma is ejected from the surroundings of the central engine and points towards Earth with a very low inclination angle, which makes them very bright at radio wavelengths as a consequence of Doppler beaming and suitable for very long baseline interferometric (VLBI) observations.

Milliarcsecond structure and variability of methanol maser emission in three high-mass protostars

Submitted by evlbi_beheer on Wed, 01/10/2024 - 12:09

Artis Aberfelds

6.7 GHz methanol masers serve as crucial signal indicators in the context of high-mass star formation. It is believed that these Class II masers are radiation-pumped, and as such, their variability is closely linked to the variability of protostars. This connection renders the study of the variability of 6.7 GHz methanol masers a promising tool for investigating processes during high-mass star formation.

EVN/JIVE Newsletter - Edition 67 January 2024

Submitted by evlbi_beheer on Tue, 01/09/2024 - 12:14

Welcome to the January 2024 issue of the EVN/JIVE newsletter.

Happy New Year and I hope 2024 will bring continued scientific success to the EVN Community. This year marks the 40th anniversary of the formal constitution of the EVN: the signing of the EVN Memorandum of Understanding took place shorty after a meeting of the EVN Directors in Vienna in June 1984. That year also saw the first, and very successful, World Array’ VLBI experiments using 18 antennas in a global array (including MERLIN) and the first EVN observations with the new 32-m telescope at Medicina.

Feedback System

Submitted by small on Mon, 12/11/2023 - 11:40

A new system for station experiment feedback has been implemented. Feedback can be added through the EVN Mattermost via the command '/feedback' (for the most recent session) or (e.g.) '/feedback 2023/2' for Session 2 of 2023. 

A form should pop up to fill in the details, as shown below.  For now, the Mattermost interface is write-only; feedback can be reviewed here.