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.

Polling for UK ALMA 2023 Hybrid Workshop

Published: 27 Sep 2022

The UK ARC Node is organising a workshop that will provide an introduction to ALMA and instructions on how to work with data from the observatory, including sessions on preparing proposals, downloading data from the ALMA archive, calibrating and imaging ALMA data, and using advanced ALMA-related tools. Any individuals interested in attending this workshop should fill in this expression of interest poll by 15 November.  After that, the dates and the schedule of the workshop will be finalized.

ALMA at 10 years: Past, Present, and Future

Published: 25 Sep 2022

To commemorate its first decade of science operations, the ALMA partnership is organizing a conference that will take a look back at the observatory accomplishments, highlight its latest results and look forward to future technical developments. The conference will be held in Puerto Varas, Chile on 4-8 December 2023. More information will be posted on the conference web page as it becomes available. Registration for the conference will open in early 2023.

New way to request raw data

Published: 09 Sep 2022

From the start of Cycle 9, PIs and Data Delegees will be able to request the release of raw data via a convenient new interface, rather than via the Helpdesk. Note that this has no effect on the policies applying to raw data release, especially regarding the start of the proprietary period with the release of the first QA0 PASS or SEMI-PASS observation. The new interface can be accessed via the Data tab on the ALMA Science Portal, or directly at asa.alma.cl/account-editor.

Results of the ACA Standalone Cycle 8 2021 Supplemental Call

Published: 07 Sep 2022

A detailed report on the results of the ACA Standalone Cycle 8 2021 Supplemental Call is now available. The report details the proposal statistics and regional distributions, as well as the proposal distribution across science categories and receiver bands.

The report can be downloaded as a pdf document.

ACA Observatory Filler Programs page now available in the Science Portal

Published: 05 Aug 2022

The ALMA Science Portal now has a dedicated page for the Atacama Compact Array (ACA) Observatory Filler Programs conducted in Cycles 5 and 6 at https://almascience.org/alma-data/observatory-programs. Nine filler programs were executed to fill specific gaps in the ACA observing schedule. The data were released through the ALMA Science Archive with no proprietary period. The programs have resulted in publication of multiple papers. We hope that ALMA users will continue to utilize those data (and all data in the Archive!) for their scientific research.

Quick Links