25/06/2025 –Spain strengthens its strategic role in the SKA Observatory: EOSOL and COMPOXI successfully complete the Detailed Design Review of the SKA-Mid telescope sub-reflectors.
3D models of a SKA-Mid antenna and its subreflector (Credits: SKAO and EOSOL)
The coordination team for Spain’s participation in the SKA project is pleased to announce that the Spanish companies EOSOL and COMPOXI have successfully passed the Detailed Design Review (DDR) for the construction project of the sub-reflectors for the SKA-Mid radio telescope. This milestone represents a decisive step in Spain’s contribution to one of the most ambitious and large-scale scientific engineering projects of the 21st century.
The successful completion of this phase validates the developed technical design and paves the way for the manufacturing stage of the 44 sub-reflectors to be integrated into the SKA-Mid antenna array, currently under construction in South Africa. This achievement is the result of several months of close collaboration between EOSOL, COMPOXI, and the technical team at the SKA Observatory, and it highlights the advanced technological capabilities of the Spanish industrial sector.
The sub-reflectors—a critical component responsible for directing incoming signals to the receivers—have a diameter of 4.5 meters and are made of composite materials with a metallized surface to ensure both mechanical stability and demanding electromagnetic performance. Each unit comprises over 100 individual parts, including six main panels and three extensions, all of which must be assembled with high precision.
We emphasize the strong collaboration between COMPOXI, a company specialized in the design and manufacturing of composite structures, and EOSOL, a leading provider of engineering services for strategic sectors. This kind of synergy exemplifies the ability of the Spanish industrial sector to make substantial and effective contributions to large-scale international scientific infrastructures.
The SKA Observatory, with core sites in South Africa and Australia, will host the most advanced radio telescopes on Earth, enabling the global scientific community to explore the Universe with unprecedented resolution and scope. Spain’s active participation—at the institutional, scientific, and industrial levels—reinforces its role as a strategic partner within this intergovernmental organization.
It is worth noting that this contract has been partially funded by the European Union through the NextGenerationEU programme, managed by the Spanish Ministry of Science, Innovation and Universities. This reflects the significant impact of public investment in research and innovation on the international visibility and competitiveness of Spain’s technological capabilities.
About Grupo EOSOL:
The EOSOL Group is a global engineering, monitoring and technical support services company with experience in more than 40 countries around the world. The aerospace division develops antennas and RF components for the space, defence and scientific sectors. We provide our customers with high-performance antenna solutions. The division covers all tasks related to the study and implementation of antennas and RF components (feasibility study, detailed design, prototyping, qualification and production).
Compoxi is a leading company in the design and production of composite structures. Compoxi combines advanced design, analysis, qualification and prototyping capabilities with industrial means that enable it to carry out serial production. Compoxi's portfolio encompasses the design and production of primary structures for satellites and launchers for the space sector, structural components for aeroplanes, helicopters and UAVs for the aeronautical sector and critical elements for scientific and industrial structures.
29/05/2025 – The SKAO, a balcony to the Universe with its heart on Earth 05/29/2025 – SKAO, a balcony to the Universe with its heart on Earth, is the title of a public talk in the Lucas Lara lecture series, which will take place on Thursday, May 29 at 7:00 p.m. in the IAA-CSIC Auditorium, Granada, Spain.
The speaker is Lourdes Verdes-Montenegro, who has coordinated Spanish participation in this project since its inception. This is a great opportunity to learn how a large astronomical observational facility, with unprecedented sensitivity and complexity, is conceived, built, and organised. Also, to learn about the construction of these telescopes in remote regions of South Africa and Australia.
In this talk, we'll learn about the latest developments and Spain's participation in the project. We'll also learn about the status of the SKA International Network of Regional Centres, for which one node is being developed in Spain. These centres are essential for the community to access the vast amount of data the telescopes will generate and to benefit from tools, technical support, and specialised training.
From this point on, we will open a window to the lesser-known dimensions of SKAO: the challenge of interference caused by mega-satellite constellations, cooperation with Africa and Indigenous tribes in Australia, Open Science, respect for the environment, and the creation of opportunities beyond science. This is an invitation to observe the Universe with the most advanced technology... and with your feet firmly on the ground.
March 17, 2025 – The first image from the SKA-Low radio telescope was released today. SKA-Low is part of the SKA Observatory (SKAO) and is located in Australia. This marks a significant milestone in SKAO's mission to provide an unprecedented view of our universe.
The first image using four stations of SKA-Low. The full moon in the upper right corner is shown for image size reference. Credit: SKAO
The image covers an area of the sky approximately 25 square degrees in size, equivalent to about 100 full moons. It displays 85 of the brightest known galaxies in that region, all of which contain supermassive black holes. The image was obtained with an early version of the SKA-Low telescope, one of two telescopes being built by SKAO. This early version of SKA-Low consists of just 1,000 of the planned 131,000 antennas. Once completed, the telescope will be able to reveal many more objects; scientists estimate it will be able to detect more than 600,000 galaxies in the same region of the sky.
SKAO is currently building two radio telescopes: SKA-Low in Western Australia and SKA-Mid in the Northern Cape Province of South Africa. The telescopes are arrays of 15-meter parabolic antennas (SKA-Mid) and dipole antennas (SKA-Low), spread over large distances. Two Spanish companies, Safran Electronics & Defense Spain and EMITE, are playing a key role in the construction of SKA-Low, providing high-precision synchronization systems between the antennas and equipment for testing and validating electronic components. "Synchronizing the signals from the different antennas is crucial for combining them correctly. Furthermore, to avoid interference, it is necessary to test that all electronic components do not generate noise in radio waves that could affect the signal from the astronomical objects being observed," explains Dr. Julián Garrido, deputy technology coordinator at SKA-Spain, adding: "For this same reason, the telescopes are being built in remote, sparsely populated locations, minimising human-caused interference."
SKA-Low is being built at Inyarrimanha Ilgari Bundara, the CSIRO Murchison Radio Astronomy Observatory, which is located on the lands of the Wajarri Yamaji Aboriginal people, the traditional owners and native land title holders. The location's Aboriginal name, Inyarrimanha Ilgari Bundara, means "sharing the sky and stars", and reflects the commitment and collaboration between SKAO and the Indigenous peoples and cultures who inhabit the lands where its telescopes are being built.
Drone image of SKA-Low's S8 cluster with two stations completed from June 2024. Credit: SKAO
The acquisition of this image has verified the telescope's operation and capabilities. Professor Philip Diamond, Director General of the SKAO, said the image marks the observatory's debut as a scientific facility. "With this image we see the promise of the SKA Observatory as it opens its eyes to the Universe," said Professor Diamond. "This first image is a critical step for the Observatory, and for the astronomy community; we are demonstrating that the system as a whole is working. As the telescopes grow, and more stations and dishes come online, we’ll see the images improve in leaps and bounds and start to realise the full power of the SKAO."
The SKAO telescopes are being built in phases, with components sourced from SKAO member countries around the world. Dr. Lourdes Verdes-Montenegro, coordinator of Spain's participation in the SKAO, highlighted the international nature of the observatory: "This milestone has been possible thanks to an international collaboration between scientists and engineers from academia and industry. Sixteen countries from five continents are participating in the SKA project, and the impact it is already having and will have will be global thanks to SKAO's commitment to the scientific community and international society as a whole."
The Spanish participation in the SKAO is funded by the Ministry of Science, Innovation and Universities, with the Andalusian Institute of Astrophysics (IAA-CSIC) responsible for the national scientific and technical coordination of the project.
This animation shows the various stages of deployment of the SKA-Low telescope over the coming years, and the images it is expected to produce of the same area of the sky. Credit: SKAO
Taking place just two years before the SKA telescopes will be tested on the first community-chosen targets, the meeting will bring together scientists from across the globe to discuss and collaborate on the cutting-edge science opportunities that the SKAO will provide in its early years of operations. Online participation will be supported for the whole week for those unable to attend in person.
Full details about the meeting are available at the #SKAOsci2025 website. #SKAOsci2025.
Note that the SKAO White Book early draft deadline has been adjusted, and instead there is a general deadline for chapter submissions of September 2025,whereupon a peer review process will commence.
22/01/2025 - A radio transient with the longest period yet seen, 2.9 hrs, was discovered by a team including Nanda Rea of ICE-CSIC and published in December 2024.
The team found the transient in low-frequency archival data from the SKAO precursor Murchison Widefield Array (MWA). Such long-period radio transients are a fairly new area of research and it is challenging to determine how the signals are generated. In this case, the team managed to find the probable source for the energy bursts, using another SKA precursor, MeerKAT, and optical SOAR observatory, and determine that the optical counterpart is a cool M3 dwarf star. This means that the signal is not due to a magnetar, but more likely is generated in a dwarf binary system scenario.
Using 2 SKAO precursors, the team could trace the 2.9 hr long-period transient radio source to a specific object and measure its counterpart in optical to find an M3 dwarf star. Image credit: Hurley-Walker at al, 2024..
The team found the radio signal in archival data from the Murchison Widefield Array radio telescope, an SKAO precursor. Image credit: ICRAR/Curtin.
01/09/2024 – El Observatorio SKA abre a la comunidad científica internacional la convocatoria para contribuir a la nueva edición del libro de ciencia SKA hasta el próximo 30 de septiembre.
El próximo año, durante la Reunión General de Ciencia del Observatorio SKA (SKAO) que se celebrará del 16 al 20 de junio, se cumplirá una década desde la publicación del libro de ciencia de SKA «Advancing Astrophysics with the Square Kilometre Array«. Este libro, escrito por la propia comunidad internacional, documenta los avances científicos que serán posibles gracias a los telescopios del SKA. En estos diez años, el diseño se ha cerrado, la construcción ha comenzado y la Organización SKA se ha transformado en un observatorio en forma de organización intergubernamental que abarca cinco continentes y ambos hemisferios.
Durante este tiempo, las observaciones realizadas con los telescopios precursores y pathfinders de SKA han arrojado nueva luz sobre enigmas científicos ya existentes y han descubierto nuevos fenómenos a la espera de una respuesta. Ahora, el SKAO está listo para comenzar las primeras pruebas para su puesta en marcha, con lo que las actividades de observación irán incrementando rápidamente. Los primeros datos de verificación científica estarán disponibles públicamente para la comunidad en 2027, y las operaciones con ambos telescopios comenzarán en 2029.
Credit: SKA Observatory
En este momento crítico, SKAO invita a la comunidad científica a contribuir a redactar una nueva versión del libro de ciencia del SKAO. El objetivo es proporcionar una cobertura actualizada de las preguntas científicas que abordarán los telescopios del SKA que esté redactada sobre la base de un conjunto maduro de especificaciones y con una variedad de herramientas y documentos disponibles basados en trabajos de diseño detallados y características del entorno de los telescopios del SKA.
El SKAO ha puesto a disposición de la comunidad científica una página donde se encuentran los detalles sobre la presentación de las expresiones de interés en contribuir con un capítulo del libro y sobre la Reunión General de Ciencia del SKAO 2025. Desde el equipo de coordinación de SKA-Spain, animamos a la comunidad española, especialmente al personal que se encuentra en etapas tempranas de sus carreras, a contribuir al libro, ya sea actualizando casos científicos existentes o incluyendo nuevos casos no cubiertos anteriormente. La convocatoria de Expresiones de Interés se cerrará el 30 de septiembre de 2024, serán revisadas por los presidentes de los Science Working Groups de SKA y se invitará a todas las ideas científicas viables a prepararse como capítulos para el libro.
Esta iniciativa presenta una oportunidad única para la comunidad científica española de influir en la dirección de la investigación astronómica internacional de los próximos años. España, como país miembro de SKAO, tendrá acceso tanto a los Key Science Projects (KSPs – proyectos de legado que ocuparan el ~ 70% del tiempo en los primeros 5 años de operaciones) como al tiempo asignado para propuestas de IP, que será proporcional al porcentaje de participación de cada país miembro. Al actualizar y añadir nuevas ideas al libro, la comunidad española podrá contribuir a maximizar el potencial científico de los telescopios del SKA y asegurar que éstos aborden el interés científico nacional, con el objetivo de mantener a la comunidad a la vanguardia de los descubrimientos astronómicos.
En conclusión, la nueva edición del libro de ciencia SKA será una guía esencial para los futuros estudios astronómicos y una plataforma para la colaboración internacional. Desde SKA-Spain, invitamos a todos los interesados a participar en esta emocionante aventura científica y a contribuir con sus conocimientos y experiencias para hacer de esta publicación un recurso valioso y actualizado para la comunidad científica global.
02/08/2024 – More than 630 participants gathered in Granada to discuss the latest developments in astronomy. The SKA project was extensively discussed, with key presentations on its technological and scientific capabilities, underlining the importance of Spanish collaboration in this global research infrastructure.
From July 15th to 19th, the XVI Scientific Meeting of the Spanish Astronomical Society (SEA, for its acronym in Spanish) was held in Granada, with a record attendance of over 630 participants and more than 400 scientific talks. During this meeting, the latest scientific and technological advances in astronomy and the Spanish participation in major projects and research infrastructures were shared. Among these, the SKA project played a prominent role, as it was the subject of the inaugural plenary lecture, a special session, and also featured in another plenary and talks in various parallel sessions.
Inaugural plenary lecture “Science with SKA: the mother of all radio telescopes” by Miguel Pérez-Torres (IAA-CSIC)
In the inaugural talk, Miguel Pérez-Torres (IAA-CSIC) discussed the capabilities of SKAO telescopes and the scientific research that can be conducted with them, encouraging all attendees to become part of the SKA community by participating in the Science Working Groups. This talk can be watched in full on the SEA's YouTube channel (link). The special session on SKA focused on the latest developments at the SKA Observatory and its international network of Regional Centres (SRCNet), addressing topics such as: the timeline for the construction of SKAO telescopes, updates on scientific cases, the SKA Science Conference to be held in June 2025, the tools already available to the community, the services offered by the Spanish prototype of SKA Regional Centre at IAA-CSIC (espSRC), and the launch of the first functional version of the SRCNet in early 2025.
Julián Garrido (IAA-CSIC) and Javier Moldón (IAA-CSIC) during the special session on SKA
The plenary talks on the second day included a presentation by Vanessa Graber (University of Hertfordshire). In this talk, she summarised the work she conducted at the Institute of Space Sciences (ICE-CSIC) on pulsars and long-period radio transients, highlighting observations made with the Murchison Widefield Array, one of the SKAO precursors in Australia. This talk can also be viewed on the SEA's YouTube channel (link).
In the parallel sessions, the SKA project was also discussed from the scientific, technological and science communication aspects. The invited talks by Susana Sánchez (IAA-CSIC) and Lourdes Verdes-Montenegro (IAA-CSIC) were particularly focused on the SKA project. Susana Sánchez discussed Spain's contribution to SRCNet and the TED4SKA project, which aims to reduce the energy consumption of SKA Regional Centres. Lourdes Verdes-Montenegro provided a review of the study of galaxies and their environments using HI observations with SKA precursors and pathfinders. Three additional talks were also presented on observations with SKA precursors and pathfinders: Jacobo Asorey (UCM) spoke about Cosmology with ASKAP surveys, Roger Ianjamasimanana (IAA-CSIC) presented work on the gas in Hickson compact groups using MeerKAT observations, and Shane O'Sullivan (UCM) discussed observations of the magnetised intergalactic medium conducted with LOTSS surveys from LOFAR and POSSUM from ASKAP. In the instrumentation and supercomputing session, Ixaka Labadie (IAA-CSIC) presented his research on remote and interactive visualisation of spectral data cubes implemented in the espSRC, which is already being applied to MeerKAT data, a SKA precursor telescope. In a different area, Marcos Villaverde (IAA-CSIC) spoke in the session dedicated to education, outreach, and heritage about the outreach initiatives carried out by SKAO and the role of Open Science in dissemination. It is also worth mentioning a poster by David Alonso-López (UCM) on work conducted within the POSSUM-ASKAP collaboration concerning the magnetised gas in the Shapley supercluster
In addition to all this, SKAO and its telescopes were featured in other talks as a reference for the future. All of this reflects the Spanish community's interest in the SKA project and its science.
From left to right and from top to bottom: Shane O’Sullivan (UCM), Lourdes Verdes-Montenegro (IAA-CSIC), Vanessa Graber (University of Hertfordshire / ICE-CSIC), Ixaka Labadie (IAA-CSIC), Susana Sánchez (IAA-CSIC), Marcos Villaverde (IAA-CSIC) and Roger Ianjamasimanana (IAA-CSIC)
22/06/2023 – The emerging era of Big Data is demanding a transformation in the way science is done via a growing push to make scientific research more accessible, a movement known as 'Open Science'. To explore what this means in practice for researchers, the first SKA Open Science School took place in Granada, Spain, from 8-10 May 2023, bringing together 80 participants from 14 countries.
The IAA-CSIC Severo Ochoa Open Science school at the Institute of Astrophysics of Andalusia was organised as a fully hybrid meeting,
with around 50% of its participants attending online. Credit: IAA-CSIC
The hybrid school was endorsed by the SKA Regional Centre partner training programme and co-organised with the SKAO under the IAA-CSIC Severo Ochoa Programme.
Participants ranged from graduate students looking for tips on making their thesis work reproducible (making tools and techniques public so that others – and even the original researchers themselves – can achieve the same results later), to the already Open Science-savvy wanting to learn practical tools. Instructors discussed transitions in science practices with accompanying challenges, and presented practical solutions, including hands-on demos. They covered topics on how to make projects/code portable throughout new versions of software, how to best use containers and science platforms, virtual observatories, setting up citizen science projects, licenses, and more.
Discussions continued between sessions on how to change habits that give quick, publishable results (the “publish-or-perish” mentality) and instead invest the time needed for long-term open and reproducible science, including how Open Science work can be appreciated by employers. As Prof. Eva Mendez of Charles III University of Madrid (UC3M) asked: “Are we prepared for a new research evaluation?”
SKAO Scientist Dr Philippa Hartley shared the new SKAO statement on Open Science, including its mission and what Open Science will do for the SKA, and the IAA’s Dr Lourdes Verdes-Montenegro, coordinator of the Spanish participation in the SKA, noted that “large scientific infrastructures have an ethical role and a practical need in Open Science”.
Sessions from the Open Science school are publicly available
on the school webpage.
17/05/2023 – These bursts, which show a similar luminosity in almost all cases, are used to measure distances in the universe or to study dark energy. The study, in which the Institute de Astrophysics de Andalusia (IAA-CSIC) participates, shows that the explosion occurred in a double star system in which a white dwarf stole material from its solar-type companion. El trabajo, en el que participa el Instituto de Astrofísica de Andalucía (IAA-CSIC), muestra que la explosión se produjo en un sistema doble de estrellas en el que una enana blanca robaba material de su compañera, de tipo solar.
Type Ia supernovae are produced when a white dwarf, the "corpse" of a Sun-like star, absorbs material from a companion star and reaches a critical mass, equivalent to 1.4 solar masses, triggering an explosion whose luminosity will, given its origin, be similar in almost all cases. This uniformity made Type Ia supernovae the ideal objects for measuring distances in the Universe, but the origin and nature of the progenitor system was unknown. Now, the first radio observation of a type Ia supernova confirms that it comes from a double star system consisting of a white dwarf and a solar-type star. The results are published in the journal Nature.
"When we saw signs of a strong interaction with the companion star material in supernova SN2020eyj, we tried to observe the explosion in radio, something that had been attempted without success for decades", explains Erik Kool, a researcher at Stockholm University and lead author of the paper.
Type Ia supernovae always contain a white dwarf, which receives material from its companion. However, it was not known whether this companion was a white dwarf or a Sun-like star, something that radio imaging could reveal.
“This first radio detection of a type Ia supernova is a milestone that has allowed us to demonstrate that the exploded white dwarf was accompanied by a normal, non-degenerate star before the explosion", says Javier Moldón, a researcher at the IAA-CSIC who participated in the discovery. In addition, with these observations we can estimate the mass and geometry of the material surrounding the supernova, which allows us to better understand what the system was like before the explosion.
Artist's conception of the system that produced the supernova, in which a white dwarf star absorbs material from its companion star. Source: Adam Makarenko/W. M. Keck Observatory.
This work, whose contribution in radio data was led by the IAA-CSIC, has confirmed that the material expelled in the supernova explosion collided, after travelling sixty days, with the material surrounding the system, composed mostly of helium, which indicates that the companion star was not a white dwarf. Furthermore, models predicted that the radio emission, if present, would take many months to be detectable, and indeed the science team had to wait a year and a half to detect the supernova's radio counterpart.
“The unusual light curve of SN 2020eyj, the infrared emission, the detection of helium emission lines and the unprecedented radio detection make this supernova unique, a treasure of information with implications for multiple fields of research", says Miguel Pérez Torres, an IAA-CSIC researcher participating in the study. “Studying more similar systems will allow us to better understand the origin of these standard candles and the chemical evolution of galaxies”.
"Now that we have shown that radio observations can provide direct and unique information to understand this type of supernovae, it opens a path to study these systems with the new generation of radio instruments, such as the Square Kilometre Array Observatory (SKAO) in the future", concludes Javier Moldón (IAA-CSIC).
The result has been possible thanks to e-MERLIN, an array of very high angular resolution radio telescopes, and the analysis of the data has been carried out from the Spanish prototype of the SKA Regional Centre (SPSRC) of the IAA-CSIC, which is supported by the Severo Ochoa project of the IAA and which facilitates the processing of data from SKAO pathfinders, such as e-MERLIN.
