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| ALMA Development Roadmap | |
|---|---|
| Name | ALMA Development Roadmap |
| Caption | Artist's impression of the Atacama Large Millimeter/submillimeter Array |
| Established | 2015 |
| Location | Atacama Desert, Chile |
| Coordinates | 23°01′S 67°45′W |
| Operators | European Southern Observatory; National Radio Astronomy Observatory; National Astronomical Observatory of Japan |
ALMA Development Roadmap The ALMA Development Roadmap outlines strategic enhancements to the Atacama Large Millimeter/submillimeter Array to expand capabilities for submillimeter and millimeter astronomy. It connects long-term scientific objectives from projects such as Event Horizon Telescope and JWST to planned technical upgrades involving partners like ESO, NRAO, and NAOJ. The Roadmap frames milestones that intersect programs including SKA, VLA, NOEMA, and missions like Herschel Space Observatory and Planck.
The Roadmap roots its vision in influences from historic facilities such as Atacama Pathfinder Experiment, Submillimeter Array, and James Clerk Maxwell Telescope, while aligning with community-driven priorities from gatherings like the Decadal Survey (astronomy), the International Astronomical Union symposia, and consortia including ALMA Partnership. It positions ALMA relative to multiwavelength observatories such as Hubble Space Telescope, Chandra X-ray Observatory, Spitzer Space Telescope, Fermi Gamma-ray Space Telescope, and radio arrays like LOFAR, MeerKAT, and FAST. The Roadmap also references landmark projects and personalities associated with interferometry innovations, including work by Martin Ryle, Antony Hewish, and institutions like CERN and MIT.
Primary scientific priorities cite key topics from recent reports including the Astro2020 Decadal Survey, emphasizing studies of protoplanetary disks informed by observations from ALMA, Keck Observatory, and VLT; high-redshift galaxy formation linked to Hubble Deep Field, Subaru Telescope, and Keck Observatory surveys; and circumstellar chemistry complementing results from SOFIA, Rosetta (spacecraft), and Cassini–Huygens. The Roadmap targets black hole environs explored by Event Horizon Telescope and GRAVITY at the Very Large Telescope Interferometer, cosmology constraints akin to Planck and WMAP, and transient science connecting to Zwicky Transient Facility, LSST (Vera C. Rubin Observatory), and IceCube Neutrino Observatory. It lists ambitions for polarization studies comparable to BICEP2 and molecular inventories paralleling catalogues from Herschel Space Observatory.
Key technical paths include receiver upgrades inspired by developments at NRAO, cryogenic advances from NASA Jet Propulsion Laboratory, and digital backend improvements paralleling work at Bell Labs and IBM Research. Proposed instrumentation encompasses wideband receivers similar to platforms at Green Bank Telescope, correlator expansions akin to VLA upgrades, and focal plane arrays following designs from ALMA Band 1 and ALMA Band 2 initiatives. The Roadmap envisions integration of phased-array capabilities used by the Event Horizon Telescope, heterogeneous array enhancements like those in NOEMA, and adaptive calibration strategies informed by techniques from Keck Adaptive Optics and Gemini Observatory. It also contemplates software tools drawing on projects at CERN OpenLab, Space Telescope Science Institute, and IPAC.
Planned observing modes include large-program frameworks modeled after Hubble Space Telescope Legacy programs and survey strategies analogous to Sloan Digital Sky Survey and Pan-STARRS. Time-domain workflows coordinate with triggers from facilities such as Swift Observatory, Fermi Gamma-ray Space Telescope, and LIGO–Virgo Collaboration. Data management strategies reference archives and pipelines developed by NASA Ames Research Center, European Space Agency, and CADC (Canadian Astronomy Data Centre), while adopting FAIR principles promoted by Research Data Alliance and computational paradigms from NERSC and ALCF (Argonne Leadership Computing Facility). Emphasis is placed on interoperability with virtual observatory standards from the International Virtual Observatory Alliance.
The Roadmap phases echo milestone planning used by projects like Square Kilometre Array and James Webb Space Telescope, enumerating near-term (0–5 years), mid-term (5–15 years), and long-term (>15 years) activities. Near-term actions focus on receiver commissioning and correlator prototyping influenced by VLA renovation schedules; mid-term work includes array expansion and software rollout comparable to NOEMA expansions; long-term vision contemplates site infrastructure and potential southern hemisphere partnerships reminiscent of negotiations for CTA Observatory and SKA. Contingency planning mirrors risk frameworks from ESA missions and procurement practices at US National Science Foundation.
Governance structures build on the existing tripartite partnership of ESO, NRAO, and NAOJ, while exploring collaborative models with agencies like NSF, NASA, European Commission, and national programs including CONICYT and ANID. Funding scenarios consider precedents from major projects such as JWST, SKA, and ALMA Construction Project allocations. Partnerships span industry innovators like Siemens and Thales Alenia Space, academic consortia from Harvard University, Caltech, University of Cambridge, Max Planck Society, and international institutes exemplified by Chinese Academy of Sciences and Australian National University.
The Roadmap forecasts scientific returns comparable to breakthroughs by Hubble Space Telescope, Planck, and ALMA itself, enabling discoveries in planet formation that complement work at Kepler and TESS, galaxy evolution studies that connect to JWST and Euclid, and multimessenger astronomy coordinated with LIGO Scientific Collaboration and IceCube. It anticipates workforce development through partnerships with universities such as University of Chicago, Princeton University, University of Tokyo, and observatories like Centro de Astrofísica de Valparaíso, enhancing training pipelines similar to those promoted by NOAO and international fellowships like the Marie Skłodowska-Curie Actions. The Roadmap also projects outreach synergies with museums and programs such as the Smithsonian Institution and SETI Institute.