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Regular proposals

Our regular proposal for observations is a formal request submitted by astronomers and researchers seeking to observe with the EVN. These proposals cover a variety of observational modes, including both disk-recorded and real-time electronic (e-EVN) sessions, following the current capabilities of the network. They are evaluated based on their scientific merit and technical feasibility, and successful proposals are granted access to the EVN's array of telescopes spread across Europe and beyond.

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.

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