The Tenerife Microwave Spectrometer (TMS) experiment: studying the absolute spectrum of the sky emission in the 10-20GHz range

Martín, José Alberto Rubiño; Alonso-Arias, P.; Hoyland, R. J.; Aguiar-González, M.; Miguel-Hernández, Javier De; Génova-Santos, R. T.; Gómez-Reñasco, M. F.; Guidi, F.; Fernández-Izquierdo, Patricia; Fernández-Torreiro, M.; Fuerte-Rodríguez, Pablo A.; Hernández-Monteagudo, C.; López-Caraballo, C. H.; Perez-de-Taoro, Angeles; Peel, M.; Rebolo, R.; Zamora-Jimenez, Antonio; González-Carretero, Eduardo D.; Colodro-Conde, Carlos; Pérez-Lemus, Cristina; Toledo-Moreo, R.; Pérez-Lizán, David; Cuttaia, F.; Terenzi, L.; Franceschet, C.; Realini, S.; Chluba, Jens; Murga-Llano, Gaizka; Sanquirce-García, R.

doi:10.1117/12.2561309

Cited by 6 publications

(8 citation statements)

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“…In the meantime, new ground-based technological solutions can be implemented to pave the way, and to observe at lower frequencies, allowing us to complete the spectral information of the CMB over a wider spectral range and providing a more robust description of the Galactic foregrounds. A first step in this direction is the Tenerife Microwave Spectrometer (TMS) [8], a novel instrument to measure the sky spectra with great sensitivity in the unexplored band between 10-20 GHz from the Teide Observatory.…”

Section: Jinst 19 P02040mentioning

confidence: 99%

“…The scientific goals of TMS have been already presented in [8]. TMS is intended mainly to measure the absolute sky spectrum in the 10-20 GHz range, searching for possible deviations from a pure blackbody spectrum at the level of 10 Jy/sr, which corresponds to the expected level of distortion signals due to reionisation and structure formation in the Universe, [3].…”

Section: General Overview Of the Instrument 21 From Scientific Goals ...mentioning

confidence: 99%

“…The down-conversion stage is not included in this representation. Reproduced with permission from [8].…”

Section: Description Of the Radiometer Designmentioning

confidence: 99%

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A microwave blackbody target for cosmic microwave background spectral measurements in the 10–20 GHz range

Alonso-Arias,

Cuttaia,

Terenzi

et al. 2024

J. Inst.

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The Tenerife Microwave Spectrometer (TMS) is a ground-based radio-spectrometer that will take absolute measurements of the sky between 10–20 GHz. To ensure the sensitivity and immunity to systematic errors of these measurements, TMS includes an internal calibration system optimised for the TMS band, and cooled down to 4 K. It consists of an Aluminium core, composed of a baseplate and a bed of pyramidal elements coated with an absorber material and a metallic shield. The absorber coating is made of a commercial resin ECCOSORB CR/MF 117. To achieve the high stability (± 1 mK/h), temperature homogeneity (thermal gradients ΔT ≤ 25 mK), and emissivity (e ≥ 0.999) requirements of the reference unit, careful consideration has been given to the RF and thermal properties of the materials, as well as their geometry. In summary, this paper presents a comprehensive account of the design, characterisation, and test results of the TMS reference system.

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Section: Jinst 19 P02040mentioning

confidence: 99%

Section: General Overview Of the Instrument 21 From Scientific Goals ...mentioning

confidence: 99%

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A microwave blackbody target for cosmic microwave background spectral measurements in the 10–20 GHz range

Alonso-Arias,

Cuttaia,

Terenzi

et al. 2024

J. Inst.

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“…The QUIJOTE telescopes are based on an offset crossed-Dragone design with projected apertures of 2.25 and 1.89 m for the primary and secondary mirrors respectively, which provides optimal polarisation properties. QT-1 is focused on observations at low frequencies (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20), and was operating between 2012 and 2018 with the Multi-Frequency Instrument (MFI, 2; 7).From 2018-2020 the KISS spectrometer was mounted(KISS, 8). QT-2 is dedicated to observations in the 30-40 GHz range, using two instruments, the Thirty-GHz Instrument (TGI) and the Forty-GHz Instrument (FGI) (7).…”

Section: Introductionmentioning

confidence: 99%

“…QUIJOTE is located at the Teide Observatory (2,400 m above sea level) in Tenerife (Canary Islands), a site with excellent observing conditions for microwave observations (median pwv of 3.5 mm, see 9), and with a long tradition of more than 35 years in CMB research. In addition to QUIJOTE, there are three CMB experiments that are either running at the moment, or to be installed in the next year: GroundBIRD (10), LSPE-STRIP (11), and the Tenerife Microwave Spectrometer (TMS, 12). QUIJOTE has a primary science goal: to provide essential information of the polarisation properties of the synchrotron and anomalous microwave emissions from our Galaxy (3).…”

Section: Introductionmentioning

confidence: 99%

The new multi-frequency instrument (MFI2) for the QUIJOTE facility in Tenerife

Hoyland¹,

Rubiño-Martín²,

Alonso-Arias³

et al. 2022

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI

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The QUIJOTE (Q-U-I JOint TEnerife) Experiment combines the operation of two radio-telescopes and three instruments working in the microwave bands 10-20 GHz, 26-36 GHz and 35-47 GHz at the Teide observatory, Tenerife, and has already been presented in previous SPIE meetings (1; 2). The Cosmology group at the IAC have designed a new upgrade to the MFI instrument in the band 10-20 GHz. The aim of the QUIJOTE telescopes is to characterise the polarised emission of the Cosmic Microwave Background (CMB), as well as Further author information: (Send correspondence to R.J.H.

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Relic neutrino decay solution to the excess radio background

Bhupal Dev,

Bari,

Martínez-Soler

et al. 2024

J. Cosmol. Astropart. Phys.

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The excess radio background detected by ARCADE 2 represents a puzzle within the standard cosmological model. There is no clear viable astrophysical solution, and therefore, it might indicate the presence of new physics. Radiative decays of a relic neutrino ν_i (either i=1, or i=2, or i=3) into a sterile neutrino ν_ s, assumed to be quasi-degenerate, provide a solution that currently evades all constraints posed by different cosmological observations and reproduces very well the ARCADE 2 data. We find a very good fit to the ARCADE 2 data with best fit values τ_i = 1.46 × 10^21 s and Δ m_i = 4.0 × 10^-5 eV, where τ_i is the lifetime and Δ m_i is the mass difference between the decaying active neutrino and the sterile neutrino. On the other hand, if relic neutrino decays do not explain ARCADE 2 data, then these place a stringent constraint Δ m_i^3/2τ_i ≳ 2 × 10^14 eV^3/2 s in the range 1.4 × 10^-5 eV<Δ m_i < 2.5 × 10^-4 eV. The solution also predicts a stronger 21 cm absorption global signal than the predicted one from the ΛCDM model, with a contrast brightness temperature T_21 = -238^+21_-20 mK (99% C.L.) at redshift z≃ 17. This is in mild tension with the even stronger signal found by the EDGES collaboration, T_21 = - 500^+200_-500 mK, suggesting that this might have been overestimated, possibly receiving a contribution from some unidentified foreground source.

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The Tenerife Microwave Spectrometer (TMS) experiment: studying the absolute spectrum of the sky emission in the 10-20GHz range

Cited by 6 publications

References 0 publications

A microwave blackbody target for cosmic microwave background spectral measurements in the 10–20 GHz range

A microwave blackbody target for cosmic microwave background spectral measurements in the 10–20 GHz range

The new multi-frequency instrument (MFI2) for the QUIJOTE facility in Tenerife

Relic neutrino decay solution to the excess radio background

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