Cosmic Infrared Background Fluctuations and Zodiacal Light

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dc.contributor.authorArendt, Richard
dc.contributor.authorKashlinsky, A.
dc.contributor.authorMoseley, S. H.
dc.contributor.authorMather, J.
dc.date.accessioned2022-06-08T16:51:58Z
dc.date.available2022-06-08T16:51:58Z
dc.date.issued2016-06-07
dc.description.abstractWe performed a specific observational test to measure the effect that the zodiacal light can have on measurements of the spatial fluctuations of the near-IR background. Previous estimates of possible fluctuations caused by zodiacal light have often been extrapolated from observations of the thermal emission at longer wavelengths and low angular resolution or from IRAC observations of high-latitude fields where zodiacal light is faint and not strongly varying with time. The new observations analyzed here target the COSMOS field at low ecliptic latitude where the zodiacal light intensity varies by factors of ∼2 over the range of solar elongations at which the field can be observed. We find that the white-noise component of the spatial power spectrum of the background is correlated with the modeled zodiacal light intensity. Roughly half of the measured white noise is correlated with the zodiacal light, but a more detailed interpretation of the white noise is hampered by systematic uncertainties that are evident in the zodiacal light model. At large angular scales (≳100'') where excess power above the white noise is observed, we find no correlation of the power with the modeled intensity of the zodiacal light. This test clearly indicates that the large-scale power in the infrared background is not being caused by the zodiacal light.en_US
dc.description.sponsorshipWe thank the referee, M. Zemcov, for comments that improved this paper. Additional helpful comments were provided by M. Ashby. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. This work was funded by JPL under Spitzer Cycle 8 funding contract 1464716, and in part through NASA/12-EUCLID11-0003 "LIBRAE: Looking at Infrared Background Radiation Anisotropies with Euclid." This research made use of NASA's Astrophysics Data System Bibliographic Services and the IDL Astronomy Library (Landsman 1993).en_US
dc.description.urihttps://iopscience.iop.org/article/10.3847/0004-637X/824/1/26en_US
dc.format.extent15 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m27xsw-hfa7
dc.identifier.citationArendt, R. G.,et al. Cosmic Infrared Background Fluctuations and Zodiacal Light. The Astrophysical Journal. vol. 824, no. 1, (2016). doi:10.3847/0004-637X/824/1/26.en_US
dc.identifier.urihttps://doi.org/10.3847/0004-637X/824/1/26
dc.identifier.urihttp://hdl.handle.net/11603/24855
dc.language.isoen_USen_US
dc.publisherIOP Scienceen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleCosmic Infrared Background Fluctuations and Zodiacal Lighten_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-8403-8548en_US

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