Welcome to ALMA and the European ALMA Regional Centre!

ALMA (Atacama Large Millimeter/submillimeter Array) is the world's largest ground-based facility for observations in the millimeter/submillimeter regime located on the Chajnantor plateau, 5000 meters altitude in northern Chile. It enables transformational research into the physics of the cold Universe, probes the first stars and galaxies, and directly images the formation of planets. ALMA comprises a giant array of fifty 12-m antennas, which can be configured to achieve baselines up to 16 km. It is equipped with state-of-the-art receivers that cover all the atmospheric windows up to 1 THz. In addition, a compact array of 7-m and 12-m antennas greatly enhance ALMA's ability to image extended sources.

The European ALMA Regional Centre (ARC) provides the interface between the ALMA project and the European science community. It supports its users mainly in the areas of proposal preparation, observation preparation, data reduction, and data analysis.

Below you can read the latest Announcements from the European ARC Network.. More details and up-to-date information can be found in the News section and the ALMA Science Portal.

ALMA Cycle 11 Call for Proposals

Published: 21 Mar 2024

The ALMA Director, on behalf of the Joint ALMA Observatory (JAO) and the partner organizations in East Asia, Europe, and North America, is pleased to announce the ALMA Cycle 11 Call for Proposals (CfP) for scientific observations to be scheduled from October 2024 to September 2025. 

Proposal submission opens at: Thursday, 21 March 202415:00 UT
Proposal submission deadline is: Thursday, 25 April 2024, 15:00 UT  



Warning: MacOS Sonoma 14.4 Java issue might terminate OT unexpectedly

Published: 20 Mar 2024

Oracle have reported a serious incompatibility between macOS Sonoma 14.4 and Java which may result in the OT terminating unexpectedly. Users are advised to update their operating systems to macOS Sonoma 14.4.1 which fixes this issue.

I-TRAIN #23: The ALMA Observing Tool

Published: 19 Mar 2024

The European ARC Network invites users to an introduction to the ALMA Observing Tool on April 11th, 11:00 CEST [Zoom].

Community events at the Nordic ARC node

Published: 18 Mar 2024

In the coming months, the Nordic ARC node is organising two events for their ALMA user community:

- Thursday April 4, 10:00 h, Proposal Preparation Day

- Wednesday June 5: Nordic ALMA Day


Upcoming workshop "The promises and challenges of the ALMA Wideband Sensitivity Upgrade" - Deadline for abstract submission: 1 March 2024

Published: 27 Feb 2024

This is a reminder that the deadline for abstract submission [https://www.eso.org/sci/meetings/2024/wsu/abstract/submission-open.html] for contributed talks on the 1st of March 2024 is approaching.  

As previously announced, the workshop 'The promise and challenges of the ALMA Wideband Sensitivity Upgrade' will take place at ESO - Garching from the 24th to the 28th of June, 2024. This upgrade constitutes the top priority of the ALMA 2030 roadmap. It consists of an increase of the instantaneous spectral bandwidth by as much as a factor of four, while retaining full spectral resolution over the entire bandwidth, thus resulting in increases of the spectral scan speed up to a factor of 50 for the highest spectral resolution. In addition, an upgrade of the full signal chain of ALMA — from the receivers and digitizers, all the way through to the correlated data — will result in increases in sensitivity for all observations. A description of the WSU technical capabilities and the science case motivating the upgrade and is available at Carpenter et al. 2022 [https://arxiv.org/abs/2211.00195].

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