ARRAKIHS Mission
@arrakihs_mission
US Space Research and TechnologyOverview
About ARRAKIHS Mission
ARRAKIHS is a space mission selected for phase A/B of the European Spacial Agency F-class program. It is s a fast mission programmed to be launched in 2030 🚀
The ARRAKIHS mission ("Analysis of Resolved Remnants of Accreted galaxies as a Key Instrument for Halo Surveys") aims to perform observational tests of the ΛCDM model, obtaining deep multi-band exposures of ultra-low surface brightness galaxies, and thus enabling detailed and systematic studies of extended galaxy haloes. The observations will allow a number of outstanding discrepancies between ΛCDM predictions and observations to be addressed. The mission's scope involves imaging a vast expanse of the sky, covering 50 square degrees each year across different visible and infrared bands at an unprecedented ultra-low surface brightness.
❗These high-resolution images will be crucial to address unresolved questions within the Λ-Cold Dark Matter (ΛCDM) cosmological framework. Up until now, such observational tests have been challenging due to atmospheric background interference, but ARRAKIHS will overcome these limitations by employing an innovative binocular telescope assembly mounted on a miniature satellite in Low Earth Orbit.
The survey will culminate in the creation of a unique catalogue of ultra-low surface brightness extragalactic images, focusing on a volume-limited and mass-limited sample of galaxies akin to our own Milky Way 🌌
The ARRAKIHS mission ("Analysis of Resolved Remnants of Accreted galaxies as a Key Instrument for Halo Surveys") aims to perform observational tests of the ΛCDM model, obtaining deep multi-band exposures of ultra-low surface brightness galaxies, and thus enabling detailed and systematic studies of extended galaxy haloes. The observations will allow a number of outstanding discrepancies between ΛCDM predictions and observations to be addressed. The mission's scope involves imaging a vast expanse of the sky, covering 50 square degrees each year across different visible and infrared bands at an unprecedented ultra-low surface brightness.
❗These high-resolution images will be crucial to address unresolved questions within the Λ-Cold Dark Matter (ΛCDM) cosmological framework. Up until now, such observational tests have been challenging due to atmospheric background interference, but ARRAKIHS will overcome these limitations by employing an innovative binocular telescope assembly mounted on a miniature satellite in Low Earth Orbit.
The survey will culminate in the creation of a unique catalogue of ultra-low surface brightness extragalactic images, focusing on a volume-limited and mass-limited sample of galaxies akin to our own Milky Way 🌌