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相关论文: New Synoptic Observations of the Cosmic Optical Ba…

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We used New Horizons LORRI images to measure the optical-band ($0.4\lesssim\lambda\lesssim0.9{\rm\mu m}$) sky brightness within a high galactic-latitude field selected to have reduced diffuse scattered light from the Milky Way galaxy (DGL),…

We used existing data from the New Horizons LORRI camera to measure the optical-band ($0.4\lesssim\lambda\lesssim0.9{\rm\mu m}$) sky brightness within seven high galactic latitude fields. The average raw level measured while New Horizons…

Direct photometric measurements of the cosmic optical background (COB) provide an important point of comparison to both other measurement methodologies and models of cosmic structure formation, and permit a cosmic consistency test with the…

宇宙学与河外天体物理 · 物理学 2023-03-15 Teresa Symons , Michael Zemcov , Asantha Cooray , Carey Lisse , Andrew R. Poppe

We present the new constraints on the cosmic optical background (COB) obtained from an analysis of the Pioneer 10/11 Imaging Photopolarimeter (IPP) data. After careful examination of data quality, the usable measurements free from the…

宇宙学与河外天体物理 · 物理学 2015-05-28 Y. Matsuoka , N. Ienaka , K. Kawara , S. Oyabu

The cosmic optical background is an important observable that constrains energy production in stars and more exotic physical processes in the universe, and provides a crucial cosmological benchmark against which to judge theories of…

天体物理仪器与方法 · 物理学 2017-05-03 Michael Zemcov , Poppy Immel , Chi Nguyen , Asantha Cooray , Carey M. Lisse , Andrew R. Poppe

Recently anomalous flux in the cosmic optical background (COB) has been reported by the New Horizon observations. The COB flux is $16.37\pm 1.47\, \rm nW m^{-2} sr^{-1}$, at the LORRI pivot wavelength of $0.608\,\rm \mu m$, which is $\sim…

高能物理 - 唯象学 · 物理学 2023-01-19 Kazunori Nakayama , Wen Yin

Recent studies using New Horizons LORRI images have returned the most precise measurement of the cosmic optical background to date, yielding a flux that exceeds that expected from deep galaxy counts by roughly a factor of two. We…

宇宙学与河外天体物理 · 物理学 2022-12-06 José Luis Bernal , Gabriela Sato-Polito , Marc Kamionkowski

We combine wide and deep galaxy number-count data from GAMA, COSMOS/G10, HST ERS, HST UVUDF and various near-, mid- and far- IR datasets from ESO, Spitzer and Herschel. The combined data range from the far-UV (0.15microns) to far-IR…

As part of the SKYSURF Hubble Space Telescope (HST) Legacy Archival program we present galaxy number counts which yield measurements of the extragalactic background light (EBL) at 15 different wavelengths. We have processed 82,752 HST…

This review covers the measurements related to the extragalactic background light (EBL) intensity from gamma-rays to radio in the electromagnetic spectrum over 20 decades in the wavelength. The cosmic microwave background (CMB) remains the…

宇宙学与河外天体物理 · 物理学 2016-02-11 Asantha Cooray

New determinations are presented of the cosmic infrared background monopole brightness in the Planck HFI bands from 100 GHz to 857 GHz. Planck was not designed to measure the monopole component of sky brightness, so cross-correlation of the…

宇宙学与河外天体物理 · 物理学 2019-05-29 N. Odegard , J. L. Weiland , D. J. Fixsen , D. T. Chuss , E. Dwek , A. Kogut , E. R. Switzer

Using all-sky maps obtained with COBE/DIRBE, we reanalyzed the diffuse sky brightness at 1.25 and 2.2 um, which consists of zodiacal light, diffuse Galactic light (DGL), integrated starlight (ISL), and isotropic emission including the…

星系天体物理 · 物理学 2015-09-30 K. Sano , K. Kawara , S. Matsuura , H. Kataza , T. Arai , Y. Matsuoka

We measure the optical spectrum of the Diffuse Galactic Light (DGL) -- the local Milky Way in reflection -- using 92,000 blank-sky spectra from the Sloan Digital Sky Survey (SDSS). We correlate the SDSS optical intensity in regions of blank…

星系天体物理 · 物理学 2011-12-23 Timothy D. Brandt , Bruce T. Draine

A recent observation by Long Range Reconnaissance Imager (LORRI) mounted on NASA's New Horizons yielded the most accurate measurement of the cosmic optical background (COB). The reported COB intensity is $11.16\pm 1.35$ $\mathrm{nW/m^2/sr}$…

宇宙学与河外天体物理 · 物理学 2025-08-20 Hriditi Howlader , Vivekanand Mohapatra , Alekha C. Nayak , Tripurari Srivastava

We present new observations of the cosmic ultraviolet background (CUVB) at high Galactic latitudes ($|b| > 40^{\circ}$), made using the Alice UV spectrograph on board the New Horizons spacecraft. These observations were taken at about 57 AU…

The Cosmic InfraRed Background (CIRB) is the sum total of the redshifted and reprocessed short wavelength radiation from the era of galaxy formation, and hence contains vital information about the history of galactic evolution. One of the…

天体物理学 · 物理学 2009-09-25 V. Gorjian , E. L. Wright , R. R. Chary

We report contributions to cosmic infrared background (CIB) intensities originating from known galaxies and their faint companions at submillimeter wavelengths. Using the publicly-available UltraVISTA catalog, and maps at 250, 350, and 500…

With the goal of attempting to observe a stochastic gravitational wave background (SGWB) with LISA, the spectral separability of the cosmological and astrophysical backgrounds is important to estimate. We attempt to determine the level with…

广义相对论与量子宇宙学 · 物理学 2021-10-08 Guillaume Boileau , Nelson Christensen , Renate Meyer , Neil J. Cornish

The cosmic infrared background (CIRB) consists mainly of the integrated light of distant galaxies. In the far-infrared the current estimates of its surface brightness are based on the measurements of the COBE satellite. Independent…

宇宙学与河外天体物理 · 物理学 2015-05-13 M. Juvela , K. Mattila , D. Lemke , U. Klaas , C. Leinert , Cs. Kiss

The Extragalactic Background Light (EBL) can be probed via the absorption imprint it leaves in the spectra of gamma-ray sources ($\gamma\gamma \rightarrow e^-e^+$). We recently developed a dedicated technique to reconstruct the EBL, and its…

高能天体物理现象 · 物理学 2019-04-03 Abhishek Desai , Kári Helgason , Marco Ajello , Vaidehi Paliya , Alberto Domínguez , Justin Finke , Dieter H. Hartmann
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