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New Spectral Evidence of an Unaccounted Component of the Near-infrared Extragalactic Background Light from the CIBER

Matsuura, Shuji and Arai, Toshiaki and Bock, James J. and Cooray, Asantha and Korngut, Phillip M. and Kim, Min Gyu and Lee, Hyung Mok and Lee, Dae Hee and Levenson, Louis R. and Matsumoto, Toshio and Onishi, Yosuke and Shirahata, Mai and Tsumura, Kohji and Wada, Takehiko and Zemcov, Michael (2017) New Spectral Evidence of an Unaccounted Component of the Near-infrared Extragalactic Background Light from the CIBER. Astrophysical Journal, 839 (1). Art. No. 7. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20170410-140333599

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Abstract

The extragalactic background light (EBL) captures the total integrated emission from stars and galaxies throughout the cosmic history. The amplitude of the near-infrared EBL from space absolute photometry observations has been controversial and depends strongly on the modeling and subtraction of the zodiacal light (ZL) foreground. We report the first measurement of the diffuse background spectrum at 0.8–1.7 μm from the CIBER experiment. The observations were obtained with an absolute spectrometer over two flights in multiple sky fields to enable the subtraction of ZL, stars, terrestrial emission, and diffuse Galactic light. After subtracting foregrounds and accounting for systematic errors, we find the nominal EBL brightness, assuming the Kelsall ZL model, is 42.7^(+11.9)_(-10.6) nW m^(−2) sr^(−1) at 1.4 μm. We also analyzed the data using the Wright ZL model, which results in a worse statistical fit to the data and an unphysical EBL, falling below the known background light from galaxies at λ < 1.3 μm. Using a model-independent analysis based on the minimum EBL brightness, we find an EBL brightness of 28.7^(+5.1)_(-3.3) nWm^(−2) sr^(−1) at 1.4 μm. While the derived EBL amplitude strongly depends on the ZL model, we find that we cannot fit the spectral data to ZL, Galactic emission, and EBL from solely integrated galactic light from galaxy counts. The results require a new diffuse component, such as an additional foreground or an excess EBL with a redder spectrum than that of ZL.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4357/aa6843DOIArticle
https://arxiv.org/abs/1704.07166arXivDiscussion Paper
ORCID:
AuthorORCID
Matsuura, Shuji0000-0002-5698-9634
Bock, James J.0000-0002-5710-5212
Cooray, Asantha0000-0002-3892-0190
Lee, Hyung Mok0000-0003-4412-7161
Matsumoto, Toshio0000-0001-6066-5221
Zemcov, Michael0000-0001-8253-1451
Additional Information:© 2017 The American Astronomical Society. Received 2016 November 14; revised 2017 March 15; accepted 2017 March 19; published 2017 April 7. We acknowledge the support of Grants-in-Aid from the Japan Society for the Promotion of Science (KAKENHI 20.34, 18204018, 19540250, 21340047, 21111004, 24111717, 26800112, and 15H05744) and NASA APRA research grants, which funded US contributions to the CIBER instrument (NNX07AI54G, NNG05WC18G, NNX07AG43G, NNX07AJ24G, and NNX10AE12G). Initial support was provided by an award to J.B. from the Jet Propulsion Laboratory's Director's Research and Development Fund. We thank the dedicated efforts of the sounding rocket staff at NASA Wallops Flight Facility and White Sands Missile Range, and also thank Dr. Allan Smith, Dr. Keith Lykke, and Dr. Steven Brown (NIST) for the laboratory calibration of LRS. A.C. acknowledges support from an NSF CAREER award AST-0645427 and NSF AST-1313319. H.M.L. was supported by NRF grant No.2012R1A4A1028713. S.M. thanks to Dr. Fumihiko Usui (Kobe University, CPS) and Dr. Takafumi Ootsubo (The University of Tokyo) for their help in coordinate calculations and for our discussions on the ZL models. This publication makes use of data products from the 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
Group:Infrared Processing and Analysis Center (IPAC), Astronomy Department
Funders:
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)20.34
Japan Society for the Promotion of Science (JSPS)18204018
Japan Society for the Promotion of Science (JSPS)19540250
Japan Society for the Promotion of Science (JSPS)21340047
Japan Society for the Promotion of Science (JSPS)21111004
Japan Society for the Promotion of Science (JSPS)24111717
Japan Society for the Promotion of Science (JSPS)26800112
Japan Society for the Promotion of Science (JSPS)15H05744
NASANNX07AI54G
NASANNG05WC18G
NASANNX07AG43G
NASANNX07AJ24G
NASANNX10AE12G
JPL Director's Research and Development FundUNSPECIFIED
NSFAST-0645427
NSFAST-1313319
National Research Foundation of Korea2012R1A4A1028713
Subject Keywords:cosmology: observations – dark ages, reionization, first stars – diffuse radiation – infrared: diffuse background – infrared: general – zodiacal dust
Issue or Number:1
Record Number:CaltechAUTHORS:20170410-140333599
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170410-140333599
Official Citation:Shuji Matsuura et al 2017 ApJ 839 7
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76481
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 Apr 2017 21:14
Last Modified:03 Oct 2019 17:01

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