This list is a compilation of experiments measuring the cosmic microwave background (CMB) radiation anisotropies and polarization since the first detection of the CMB by Penzias and Wilson in 1964. There have been a variety of experiments to measure the CMB anisotropies and polarization since its first observation in 1964 by Penzias and Wilson. These include a mix of ground-, balloon- and space-based receivers.[2][3] Some notable experiments in the list are COBE, which first detected the temperature anisotropies of the CMB, and showed that it had a black body spectrum; DASI, which first detected the polarization signal from the CMB;[4]CBI, which made high-resolution observations and obtained the first E-mode polarization spectrum;[5]WMAP; and the Planck spacecraft, which has produced the highest resolution all-sky map to-date of both the temperature anisotropies and polarization signals.[6] Current scientific goals for CMB observation include precise measurement of gravitational lensing, which can constrain the mass of the neutrino; and measurement of B-mode polarization as possible evidence for cosmic inflation.
The design of cosmic microwave background experiments[2][3][4][7][8] is a very challenging task. The greatest problems are the receivers, the telescope optics and the atmosphere. Many improved microwave amplifier technologies have been designed for microwave background applications. Some technologies used are HEMT, MMIC, SIS and bolometers.[8] Experiments generally use elaborate cryogenic systems to keep the amplifiers cool. Often, experiments are interferometers which only measure the spatial fluctuations in signals on the sky, and are insensitive to the average 2.7 K background.[4]
Another problem is the 1/f noise intrinsic to all detectors. Usually the experimental scan strategy is designed to minimize the effect of such noise.[7] To minimize side lobes, microwave optics usually utilize elaborate lenses and feed horns. Finally, in ground-based (and, to an extent, balloon-based) instruments, water and oxygen in the atmosphere emit and absorb microwave radiation. Even at frequencies where the atmospheric transmission is high, atmospheric emission contributes photon noise that limits the sensitivity of an experiment. CMB research therefore uses of air- and space-borne experiments, as well as dry, high altitude locations such as the Chilean Andes and the South Pole.[9]
The list below consists of a partial list of past, current and planned CMB experiments. The name, start and end years of each experiment are given, followed by the basis of the experiment—whether space, balloon or ground based—and the location where appropriate. The frequency and amplifier technologies used are given, as is the main targets of the experiments.[10]
^ abLawrence, Charles (April 2006). Ongoing and future ground-based and balloon-borne CMB temperature and polarization experiments. CMB and Physics of the Early Universe (CMB2006). Ischia, Italy: Proceedings of Science. p. 12. Bibcode:2006cmb..confE..12L.
^Wu, Jiun-Huei Proty; et al. (2008). "AMiBA Observations, Data Analysis and Results for Sunyaev-Zel'dovich Effects". arXiv:0810.1015 [astro-ph].
^Simon, S.M.; et al. (ABS collaboration) (June 2013). Early Results from the First Year of Observations by the Atacama B-mode Search (ABS). AAS Meeting #222, #119.06. American Astronomical Society. Bibcode:2013AAS...22211906S.
^Barkats, Denis; Aikin, R.; Bischoff, C.; Buder, I.; Kaufman, J. P.; Keating, B. G.; Kovac, J. M.; Su, M.; Ade, P. A. R.; Battle, J. O.; Bierman, E. M.; Bock, J. J.; Chiang, H. C.; Dowell, C. D.; Duband, L.; Filippini, J.; Hivon, E. F.; Holzapfel, W. L.; Hristov, V. V.; Jones, W. C.; Kuo, C. L.; Leitch, E. M.; Mason, P. V.; Matsumura, T.; Nguyen, H. T.; Ponthieu, N.; Pryke, C.; Richter, S.; Rocha, G.; Sheehy, C.; Kernasovskiy, S. S.; Takahashi, Y. D.; Tolan, J. E.; Yoon, K. W.; et al. (BICEP1 collaboration) (March 2014). "Degree-scale Cosmic Microwave Background Polarization Measurements from Three Years of BICEP1 Data". Astrophysical Journal. 783 (2): 67. arXiv:1310.1422. Bibcode:2014ApJ...783...67B. doi:10.1088/0004-637X/783/2/67. S2CID18249581.
^Ade, P. A. R.; Aikin, R. W.; Amiri, M.; Barkats, D.; Benton, S. J.; Bischoff, C. A.; Bock, J. J.; Brevik, J. A.; Buder, I.; Bullock, E.; Davis, G.; Day, P. K.; Dowell, C. D.; Duband, L.; Filippini, J. P.; Fliescher, S.; Golwala, S. R.; Halpern, M.; Hasselfield, M.; Hildebrandt, S. R.; Hilton, G. C.; Irwin, K. D.; Karkare, K. S.; Kaufman, J. P.; Keating, B. G.; Kernasovskiy, S. A.; Kovac, J. M.; Kuo, C. L.; Leitch, E. M.; Llombart, N.; Lueker, M.; Netterfield, C. B.; Nguyen, H. T.; O'Brient, R.; Ogburn, R. W.; Orlando, A.; Pryke, C.; Reintsema, C. D.; Richter, S.; Schwarz, R.; Sheehy, C. D.; Staniszewski, Z. K.; Story, K. T.; Sudiwala, R. V.; Teply, G. P.; Tolan, J. E.; Turner, A. D.; Vieregg, A. G.; Wilson, P.; Wong, C. L.; Yoon, K. W.; et al. (BICEP1 collaboration) (2014). "BICEP2. II. Experiment and three-year data set". The Astrophysical Journal. 792 (1): 62. arXiv:1403.4302. Bibcode:2014ApJ...792...62B. doi:10.1088/0004-637X/792/1/62. ISSN1538-4357. S2CID18486247.
^Polenta, G.; P. A. R., Ade; J., Bartlett; E., Bréelle; L., Conversi; P., de Bernardis; C., Dufour; M., Gervasi; M., Giard; C., Giordano; Y., Giraud-Heraud; B., Maffei; S., Masi; F., Nati; A., Orlando; S., Peterzen; F., Piacentini; M., Piat; L., Piccirillo; G., Pisano; R., Pons; C., Rosset; G., Savini; G., Sironi; A., Tartari; M., Veneziani; M., Zannoni (March 2007). "The BRAIN CMB polarization experiment"(PDF). New Astronomy Reviews. 51 (3–4): 256. Bibcode:2007NewAR..51..256P. doi:10.1016/j.newar.2006.11.065. hdl:10281/3018.
^Gush, H.P.; Halpern, M. (1992). "Cooled submillimeter Fourier transform spectrometer flown on a rocket". Rev. Sci. Instrum. 63 (6): 3249. Bibcode:1992RScI...63.3249G. doi:10.1063/1.1142534.
^Taylor, Angela C.; Jones, Michael E.; Allison, James R.; Angelakis, Emmanouil; Bond, J. Richard; Bronfman, Leonardo; Bustos, Ricardo; Davis, Richard J.; Dickinson, Clive; Leech, Jamie; Mason, Brian S.; Myers, Steven T.; Pearson, Timothy J.; Readhead, Anthony C. S.; Reeves, Rodrigo; Shepherd, Martin C.; Sievers, Jonathan L. (2011). "The Cosmic Background Imager 2". Monthly Notices of the Royal Astronomical Society. 418 (4): 2720–2729. arXiv:1108.3950. Bibcode:2011MNRAS.418.2720T. doi:10.1111/j.1365-2966.2011.19661.x. ISSN0035-8711. S2CID2703946.
^Essinger-Hileman, Thomas; Ali, Aamir; Amiri, Mandana; Appel, John W.; Araujo, Derek; Bennett, Charles L.; Boone, Fletcher; Chan, Manwei; Cho, Hsiao-Mei; Chuss, David T.; Colazo, Felipe; Crowe, Erik; Denis, Kevin; Dünner, Rolando; Eimer, Joseph; Gothe, Dominik; Halpern, Mark; Harrington, Kathleen; Hilton, Gene; Hinshaw, Gary F.; Huang, Caroline; Irwin, Kent; Jones, Glenn; Karakla, John; Kogut, Alan J.; Larson, David; Limon, Michele; Lowry, Lindsay; Marriage, Tobias; Mehrle, Nicholas; Miller, Amber D.; Miller, Nathan; Moseley, Samuel H.; Novak, Giles; Reintsema, Carl; Rostem, Karwan; Stevenson, Thomas; Towner, Deborah; U-Yen, Kongpop; Wagner, Emily; Watts, Duncan; Wollack, Edward; Xu, Zhilei; Zeng, Lingzhen; et al. (CLASS Collaboration) (23 July 2014). Holland, Wayne S; Zmuidzinas, Jonas (eds.). "CLASS: the cosmology large angular scale surveyor". Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. 9153: 91531I. arXiv:1408.4788. Bibcode:2014SPIE.9153E..1IE. doi:10.1117/12.2056701. S2CID13691600.
^Lazear, Justin; Ade, Peter A. R.; Benford, Dominic; Bennett, Charles L.; Chuss, David T.; Dotson, Jessie L.; Eimer, Joseph R.; Fixsen, Dale J.; Halpern, Mark; Hilton, Gene; Hinderks, James; Hinshaw, Gary F.; Irwin, Kent; Jhabvala, Christine; Johnson, Bradley; Kogut, Alan; Lowe, Luke; McMahon, Jeff J.; Miller, Timothy M.; Mirel, Paul; Moseley, S. Harvey; Rodriguez, Samelys; Sharp, Elmer; Staguhn, Johannes G.; Switzer, Eric R.; Tucker, Carole E.; Weston, Amy; Wollack, Edward J. (2014). "The Primordial Inflation Polarization Explorer (PIPER)". In Holland, Wayne S; Zmuidzinas, Jonas (eds.). Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. Vol. 9153. pp. 91531L. arXiv:1407.2584. doi:10.1117/12.2056806. S2CID2510422.
^Zannoni, M.; Tartari, A.; Gervasi, M.; Boella, G.; Sironi, G.; De Lucia, A.; Passerini, A.; Cavaliere, F. (2008). "TRIS. I. Absolute Measurements of the Sky Brightness Temperature at 0.6, 0.82, and 2.5 GHz". The Astrophysical Journal. 688 (1): 12–23. arXiv:0806.1415. Bibcode:2008ApJ...688...12Z. doi:10.1086/592133. S2CID55948501.
^Farese, Philip C.; Dall’Oglio, Giorgio; Gundersen, Joshua O.; Keating, Brian G.; Klawikowski, Slade; Knox, Lloyd; Levy, Alan; Lubin, Philip M.; O’Dell, Chris W.; Peel, Alan; Piccirillo, Lucio; Ruhl, John; Timbie, Peter T. (2004). "COMPASS: An Upper Limit on Cosmic Microwave Background Polarization at an Angular Scale of 20′". The Astrophysical Journal. 610 (2): 625–634. arXiv:astro-ph/0308309. Bibcode:2004ApJ...610..625F. doi:10.1086/421837. ISSN0004-637X. S2CID119404616.
^Parijskij, Yu. N.; Mingaliev, M. G.; Nizhel’skii, N. A.; Bursov, N. N.; Berlin, A. B.; Grechkin, A. A.; Zharov, V. I.; Zhekanis, G. V.; Majorova, E. K.; Semenova, T. A.; Stolyarov, V. A.; Tsybulev, P. G.; Kratov, D. V.; Udovitskii, R. Yu.; Khaikin, V. B. (2011). "Multi-frequency survey of background radiations of the Universe. The "Cosmological Gene" project. First results". Astrophysical Bulletin. 66 (4): 424–435. Bibcode:2011AstBu..66..424P. doi:10.1134/S1990341311040043. ISSN1990-3413. S2CID123152017.
^MacDermid, Kevin; EBEX Collaboration (2014-07-23). Holland, Wayne S.; Zmuidzinas, Jonas (eds.). "The performance of the bolometer array and readout system during the 2012/2013 flight of the E and B experiment (EBEX)". Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. 9153: 915311. arXiv:1407.6894. Bibcode:2014SPIE.9153E..11M. doi:10.1117/12.2056267. S2CID118399923.
^Fowler, J. W.; Doriese, W. B.; Marriage, T. A.; Tran, H. T.; Aboobaker, A. M.; Dumont, C.; Halpern, M.; Kermish, Z. D.; Loh, Y.-S.; Page, L. A.; Staggs, S. T.; Wesley, D. H. (2005). "CMB Observations with a Compact Heterogeneous 150 GHz Interferometer in Chile". The Astrophysical Journal Supplement Series. 156 (1): 1–11. arXiv:astro-ph/0403137. Bibcode:2005ApJS..156....1F. doi:10.1086/426393. S2CID10422803.
^Silverberg, Robert F.; Aguirre, James; Bezaire, Jeff; Cheng, Edward S.; Christensen, Per Rex; Cordone, Shawn; Cottingham, David A.; Crawford, Thomas; Fixsen, Dale J.; Kenny, P.; Knox, Lloyd; Kristensen, Rene Engel; Meyer, Stephan; Noergaard-Nielsen, Hans Ulrich; Timbie, Peter T.; Wilson, Grant W.; et al. (TopHat Collaboration) (2003). Melugin, Ramsey K; Roeser, Hans-Peter (eds.). "The long duration flight of the TopHat experiment". Proc. SPIE 4857, Airborne Telescope Systems II. Airborne Telescope Systems II. 4857: 195–204. Bibcode:2003SPIE.4857..195S. doi:10.1117/12.458649. S2CID6509369.