Observations of the Near-Infrared Spectrum of the Zodiacal Light With Ciber

Tsumura, Kohji; Battle, John; Bock, J. J.; Cooray, Asantha; Hristov, V. V.; Keating, Brian; Lee, D. H.; Levenson, L.; Mason, P.; Matsumoto, Toshio; Matsuura, Shuji; Nam, U. W.; Renbarger, T.; Sullivan, M.; Suzuki, Kunio; Wada, Takehiko; Zemcov, Michael

doi:10.1088/0004-637x/719/1/394

Cited by 58 publications

(96 citation statements)

References 40 publications

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“…A few per cent differences in the ZL templates among the flights exceeding the error bars could be due to systematic error in the gain calibration. Our measured ZL spectrum is redder than solar spectrum (thin line, http://rredc.nrel.gov/solar/spectra/am0), and the weak spectral features from 0.9 to 1.4 µm causing the reddening are associated with silicates as reported by first flight CIBER measurements (Tsumura et al 2010). The amplitude of the solar spectrum is scaled to the data at 1.6 µm.…”

Section: Zodiacal Lightmentioning

confidence: 64%

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

Matsuura

Arai

Bock

et al. 2017

ApJ

107

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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 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 Zodiacal light, stars, terrestrial emission, and diffuse Galactic light. After subtracting foregrounds and accounting for systematic errors, we find the nominal EBL brightness, assuming the Kelsall Zodiacal light 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 Zodiacal light 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 Zodiacal light model, we find that we cannot fit the spectral data to Zodiacal light, 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 Zodiacal light.

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Section: Zodiacal Lightmentioning

confidence: 64%

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

Matsuura

Arai

Bock

et al. 2017

ApJ

107

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“…The first flight took place on February 25, 2009 and yielded good results, though thermal contamination from the skin caused much of the data analysis to be extremely challenging. Despite this, Tsumura et al (2010) details this discovery of a new, broad line in the reflected solar light from the ZL which has implications for the source of the Zodiacal dust. Particles from both asteroids and comets contribute to the Zodiacal dust cloud; the overall albedo measured by CIBER shows that the composition of the Zodiacal dust near the Earth is dominated by minerals common in asteroids rather than in comets.…”

Section: Ciber Observations and Resultsmentioning

confidence: 97%

“…The Low Resolution Spectrometer (LRS) is an 15 ≤ R ≤ 30 spectro-photometric instrument designed to measure the near IR EBL at 0.7 ≤ ≤ 2.1 µm; a thorough description of the LRS instrument can be found in Tsumura et al (2010). The LRS comprises an optical coupler with a 5-slit mask at the focus coupled to an imaging camera with a 256 × 256 HgCdTe detector at its focus.…”

Section: Low Resolution Spectrometermentioning

confidence: 99%

Measuring Light from the Epoch of Reionization with CIBER, the Cosmic Infrared Background Experiment

Zemcov¹,

Arai²,

Battle³

et al. 2011

Proceedings of Cosmic Radiation Fields: Sources in the Early Universe — PoS(CRF 2010)

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Ultraviolet emission from the first generation of stars in the Universe ionized the intergalactic medium in a process which was completed by z ∼ 6; the wavelength of these photons has been redshifted by (1 + z) into the near infrared today and can be measured using instruments situated above the Earth's atmosphere. First flown in February 2009, the Cosmic Infrared Background Experiment (CIBER) comprises four instruments housed in a single reusable sounding rocket borne payload. CIBER has measured spatial anisotropies in the extragalactic IR background caused by cosmological structure from the epoch of reionization using two broadband imaging instruments, make a detailed characterization of the spectral shape of the IR background using a low resolution spectrometer, and measure the absolute brightness of the Zodical light foreground with a high resolution spectrometer in each of our six science fields. This paper presents the scientific motivation for CIBER and details of its first two flights, including a review of the published scientific results from the first flight and an outlook for future reionization science with CIBER data.

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“…If these processes take place, the TeV γ-ray and the EBL excess can coexist. The origins of the excess emission and fluctuation are still not clear, and new observations are widely expected to delineate their origins The Cosmic Infrared Background ExpeRiment (CIBER) (Zemcov et al, 2013) will provide the spectrum of the sky at 0.75-1.8 µm with the Low Resolution Spectrometer (LRS) (Tsumura et al, 2010(Tsumura et al, , 2013d. Observation from outside the zodiacal cloud is also highly desirable to conduct an ideal observation of the EBL without the strong ZL foreground.…”

Section: What Is Origin Of Ebl Excess?mentioning

confidence: 99%

The Diffuse Near-Infrared Background Spectrum From Akari

Tsumura¹,

Matsumoto²,

Matsuura³

et al. 2017

Publications of The Korean Astronomical Society

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We analyzed spectral data of the astrophysical diffuse emission obtained with the low-resolution spectroscopy mode on the AKARI InfraRed Camera (IRC) in the 1.8-5.3 µm wavelength region. Advanced reduction methods specialized for slit spectroscopy of diffuse sky spectra have been developed, and a catalog of 278 spectra of the diffuse sky covering a wide range of Galactic and ecliptic latitudes was constructed. Using this catalog, two other major foreground components, the zodiacal light (ZL) and the diffuse Galactic light (DGL), were separated and subtracted by taking correlations with ZL brightness estimated by the DIRBE ZL model and with the 100 µm dust thermal emission, respectively. The isotropic emission was interpreted as the extragalactic background light (EBL), which shows significant excess over the integrated light of galaxies at <4 µm.

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Observations of the Near-Infrared Spectrum of the Zodiacal Light With Ciber

Cited by 58 publications

References 40 publications

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

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

Measuring Light from the Epoch of Reionization with CIBER, the Cosmic Infrared Background Experiment

The Diffuse Near-Infrared Background Spectrum From Akari

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