News & Press Releases

Latest News

  1. [22 September 2022] The Chromospheric LAyer Spectro-Polarimeter (CLASP) international team has just received the NASA "Group Achievement Honor Award" for the successful execution of the recent CLASP2.1 mission. The goal of this mission is to map the magnetic field of the Sun in an extended region of the chromosphere. More information
  2. [18 October 2021] New CLASP Press Release: CLASP2.1: a new suborbital space mission for mapping the magnetic field of the solar chromosphere In 2015 and 2019 an international team (USA, Japan and Europe) carried out two unprecedented suborbital space experiments called CLASP and CLASP2, which were motivated by theoretical investigations carried out at the IAC. After the success of such missions, the team has just launched CLASP2.1 from the NASA facility in White Sands Missile Range (New Mexico, USA). The aim is to map the solar magnetic field throughout the chromosphere of an active region. To this end, CLASP2.1 has successfully measured the intensity and polarization of the solar ultraviolet radiation emitted by magnesium and manganese atoms, which can only be observed above the Earth’s atmosphere. More information
  3. [18 August 2021] IRSOL and IAC scientists solve a complex paradox in solar physics. In 1998, the journal Nature published a seminal letter concluding that the mysterious polarization signal that had been recently discovered in the light emitted by the sodium atoms of the solar atmosphere implies that the solar chromosphere is practically unmagnetized, in sharp contradiction with common wisdom. This paradox motivated laboratory experiments and theoretical investigations, which instead of providing a solution, raised new issues and even led some scientists to question the quantum theory of radiation-matter interaction. In an article published and highlighted today by the prestigious Physical Review Letters, Ernest Alsina Ballester (IRSOL and IAC), Luca Belluzzi (IRSOL) and Javier Trujillo Bueno (IAC) show the solution to such intriguing paradox, which has puzzled solar physicists over the last decades. More information here and here
  4. [29 January 2021] The Chromospheric LAyer Spectro-Polarimeter (CLASP-2) international team has been awarded the “Group Achievement Honor NASA Award”. The CLASP-1 and CLASP-2 missions, motivated by theoretical investigations of the POLMAG group, have opened a window to study the magnetic field and the geometry of the plasma in the outermost layers of the solar chromosphere, very close to the base of the extremely hot corona. More information
  5. [16 March 2020] Public version of the 3D radiative transfer code PORTA. We have released a public version of the non-LTE radiative transfer code PORTA, which comes with several modules useful for considering some problems of interest for the planning and interpretation of spectropolarimetric observations with the present and new generation of solar telescopes, as well as with a user-friendly interface to visualize the results. It can be applied to solve the non-LTE problem of the generation and transfer of polarized radiation in three-dimensional (3D) Cartesian models of stellar atmospheres. More information
  6. [13 March 2020] The IAC presents the video of the POLMAG project. The IAC presents a public outreach video about the project “Polarized Radiation Diagnostics for Exploring the Magnetism of the Outer Solar Atmosphere” (POLMAG). In this video, several POLMAG scientists explain the basic aspects of the project. The POLMAG research group was created in January 2018 within the framework of the Advanced Grant awarded by the European Research Council (ERC) to Javier Trujillo Bueno (CSIC Research Professor and IAC Senior Scientist). More information
  7. [12 November 2019] New CLASP Press Release: Scientists from the US, Japan and Europe meet to discuss the first results of the CLASP-2 suborbital space experiment. The POLMAG group has organized the international CLASP-2 Science Meeting at the IAC headquarters in La Laguna. CLASP and CLASP-2 are opening up a new diagnostic window in solar and stellar magnetism. More information
  8. [24 May 2019] Interview (in Spanish) to Javier Trujillo Bueno in the Coffee Break weekly science podcast, episode 216. (The whole Coffe Break program can be listened to at ivoox).

  9. [16 April 2019] New CLASP Press Release: CLASP-2: investigating the magnetic solar chromosphere by means of telescopes launched into space with NASA suborbital rockets. Four years ago, an international team (USA, Japan and Europe) carried out an unprecedented suborbital space experiment called CLASP-1. After the outstanding success of that mission, a few days ago NASA has launched CLASP-2. CLASP-2 has made it possible to detect for the first time the polarization produced by several physical mechanisms in the most intense ultraviolet radiation emitted by the ionized magnesium atoms of the solar atmosphere. More information
  10. [28 November 2018] A Sun more complex than expected. The CLASP suborbital rocket experiment, motivated by theoretical investigations carried out at the IAC, provided unprecedented observations of the polarization of the solar ultraviolet radiation. The theoretical modeling of these pioneering observations has revealed that the enigmatic chromosphere-corona transition region is extremely corrugated, with a geometry much more complex than in today’s most advanced models. More information
  11. [24 July 2018] Dr. Tanausú del Pino Alemán has been awarded the "ESPD Early Career Researcher Prize" for 2018 given by the European Physical Society to young researchers. This important recognition was awarded for his innovative contributions in the field of theoretical spectropolarimetry. More information.
  12. [4 June 2018] The Swiss National Science Foundation (SNF) has awarded one of its prestigious “Synergy Grants” to three European scientists, among them Javier Trujillo Bueno, to join efforts for solving a very complex research problem of Solar Physics whose solution requires synergies between the quantum theory of the generation and transfer of polarized radiation in magnetized plasmas and high-performance computational techniques (HPC). More information.

Press Releases

  1. CLASP Press Releases
  2. POLMAG Press Releases