This site will be out of service for maintenance on Monday, May 6 from 7:30 to 8:00.

Observations of the microwave background on a scale of 8 deg. I - The observing system

Bibcode
1992MNRAS.258..605D
Davies, R. D.; Watson, R. A.; Daintree, E. J.; Hopkins, J.; Lasenby, A. N.; Sanchez-Almeida, J.; Beckman, J. E.; Rebolo, R.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 3, p. 605-615.

Advertised on:
10
1992
Number of authors
8
IAC number of authors
3
Citations
22
Refereed citations
18
Description
A sensitive observing system for observing the cosmic microwave background on an angular scale of 8 deg is described. This angular scale is appropriate for studies of intrinsic fluctuations in the CMB generated by gravitational potential fluctuations (the Sachs-Wolfe effect). The beam-switching system employs low-noise and broadband cryogenically cooled receivers. A major improvement in the stability of the system has resulted from triple-beam operation which removes the effect of atmospheric water vapour and ambient temperature changes to a level of several millikelvin on a single scan. The evaluation and assessment of this system operating at an elevation of 2400 m on Tenerife is described. Results for an RA circle at Dec. = 40 deg are shown; these reach a sensitivity of better than 100 micro-K in an 8.4 deg beam.
Type
Refereed
Cosmology
Water vapor

It may interest you

  • Refereed
    Identification of the Top TESS Objects of Interest for Atmospheric Characterization of Transiting Exoplanets with JWST
    JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5000 confirmed planets, more than 4000 Transiting Exoplanet Survey Satellite (TESS) planet candidates are still unconfirmed and many of the best planets for atmospheric characterization may remain to be identified. We present a sample
    Hord, Benjamin J. et al.

    Advertised on:

    5
    2024
    Bibcode
    2024AJ....167..233H
    Citations
    0
  • Refereed
    High-resolution Spectroscopic Reconnaissance of a Temperate Sub-Neptune
    The study of temperate sub-Neptunes is the new frontier in exoplanetary science. A major development in the past year has been the first detection of carbon-bearing molecules in the atmosphere of a temperate sub-Neptune, K2-18 b, a possible Hycean world, with the James Webb Space Telescope (JWST). The JWST is poised to characterize the atmospheres
    Cabot, Samuel H. C. et al.

    Advertised on:

    5
    2024
    Bibcode
    2024ApJ...966L..10C
    Citations
    0
  • Refereed
    Nonlinear Wave Damping by Kelvin–Helmholtz Instability-induced Turbulence
    Magnetohydrodynamic kink waves naturally form as a consequence of perturbations to a structured medium, for example, transverse oscillations of coronal loops. Linear theory has provided many insights into the evolution of linear oscillations, and results from these models are often applied to infer information about the solar corona from observed
    Hillier, Andrew et al.

    Advertised on:

    5
    2024
    Bibcode
    2024ApJ...966...68H
    Citations
    0