Astrophysics (Index)About

intensity mapping surveys

(intensity mapping experiments, line intensity mapping surveys)
(efforts mapping the intensity of spectral lines across the sky)

There are quite a number of intensity mapping surveys, i.e., surveys carrying out intensity mapping (aka line intensity mapping, LIM). They search for lines associated with star formation and associated galaxies, through emission lines produced by the galaxies or through absorption lines imprinted on electromagnetic radiation from further back. Among the lines mapped:

21-cm line21 cm
H-alpha656.5 nm
H-beta486.1 nm
Lyman alpha121.6 nm
[CII]158 μm
CO ladder lines2.6 mm, 1.3 mm, 0.87 mm, 0.65 mm, 0.52 mm
oxygen lines: [O II], [O III]372.7 nm, 500.7 nm

These wavelengths are mapped in the study of the Milky Way, but the term intensity mapping is typically used for surveys of cosmological interest, of these lines at various redshifts. Among the surveys:

AIM-COCO 2-1, CO 3-22017-YTLA, Mauna Loa, Hawaii
AtLAST proposedAtacama Desert, Chile
BINGO21 cmfutureBrazil
BOSS part of SDSS
CDFS
CDIMLy-α, H-αconceptspace
CHIME21 cm2018-British Columbia, Canada
CIBER sounding rockets
COMAPCO 1-0, CO 2-1futureOVRO, California
CONCERTO[C II], CO x-xfutureTeide Observatory, Canary Islands
COPSSCO 1-02005-2008Sunyaev-Zel'dovich Array, California
COSMOS
EXCLAIM[C II], COfutureballoon
FAST21 cm2017-China
FYST[C II]futureAtacama Desert
GBT-IM21 cm2009GBO, West Virginia
GMRT-EoR21 cm2007India
GOODS-South
HERA21 cmfutureSouth Africa
HETDEXLy-α2017-Hobby-Eberly Telescope, Texas
HIRAX21 cmfutureSouth Africa
LIME
LOFAR21 cm2013-Europe
LWA21 cm2015-New Mexico
MeerKLASS21 cmfutureMeerKAT
mmIMECOfutureNew Mexico, Hawaii, Chile
MWA21 cm2018-Australia
OVRO-LWA21 cm California
OST futurespace
PAPER21 cm2010-2014South Africa
PIXIECO linesproposedspace
Parkes LIM21 cm2014Parkes Observatory, Australia
SKA-LOW
SKA-MID
SPHERExH-α, H-β, [O II], [O III], Ly-αfuturespace
SPT-SLIM South Pole Station
SuperSpec
Tianlai21 cmfutureChina
TIM[C II]futureballoon
TIME[C II], CO linesfutureArizona, Chile
(surveys,intensity mapping)
Further reading:
https://lambda.gsfc.nasa.gov/product/expt/lim_experiments.html
https://www.symmetrymagazine.org/article/seeing-the-full-picture-with-line-intensity-mapping
https://ui.adsabs.harvard.edu/abs/2019BAAS...51c.101K/abstract
https://ui.adsabs.harvard.edu/abs/2022A%26ARv..30....5B/abstract
https://arxiv.org/abs/2204.00685
https://arxiv.org/abs/2203.07258
https://arxiv.org/abs/1709.09066

Referenced by page:
intensity mapping (IM)
Index