QUIJOTE Experiment
Astronomical experiment
The QUIJOTE CMB Experiment is an ongoing experiment started in November 2012, and led by Rafael Rebolo López, with the goal of characterizing the polarization of the cosmic microwave background (CMB) and other galactic and extragalactic emission in the frequency range 10 to 40 GHz, at angular scales of 1°. These measurements will complement at low frequency and correct from galactic contamination those obtained by the Planck satellite from 2009 to 2013.
The two QUIJOTE telescopes are placed at the Teide Observatory, run by the Spanish Instituto de Astrofisica de Canarias (IAC). Both telescopes were produced by the IDOM company in Spain.
Overview
The primordial matter density fluctuations that originated the present structure of the universe left imprinted spatial variations in the CMB radiation. From high sensitivity maps of this radiation, QUIJOTE aims to constrain the most relevant cosmological parameters: total energy/matter density, density of cold dark matter, density of baryonic matter, the Hubble constant, density of dark energy, neutrino density, and the reionization epoch.
The first QUIJOTE-CMB telescope (QT1), in operation since November 2012, has two instruments which can be exchanged in the QT1 focal plane. The first instrument (MFI) is a multichannel instrument providing the frequency coverage between 10 and 20 GHz. The second instrument (TGI) consists of 31 polarimeters working at 30 GHz.
The second QUIJOTE-CMB telescope (QT2), in operation since 2014, will house a third instrument (FGI) with 31 polarimeters working at 40 GHz.
Begin with the source’s own compact description: “QUIJOTE Experiment” is astronomical experiment. The dossier treats that line as a proposition to test through QUIJOTE, Experiment and Astronomical, not as a finished interpretation.
Why this record matters
The phrase “astronomical experiment” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 14, 2026. The linked authority identifier is Q28032440. Authority coordinates are 28.300, -16.510. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2012, 2009, 2013 and 2014.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “QUIJOTE Experiment”, its source revision and the description used here.
- Expand the search: follow QUIJOTE Experiment primary sources, QUIJOTE Experiment archive and QUIJOTE research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “QUIJOTE Experiment”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “QUIJOTE Experiment” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.