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A major goal of modern astrophysics is to understand the processes by which the universe evolved from its initial simplicity, as seen in measurements of the Cosmic Microwave Background, to the universe we see today, with complexity on all…

Although far-IR -- mm-wave astronomy has now been developing for several decades, access to this portion of the spectrum remains difficult and limited. Relative to their optical-wavelength counterparts, the submillimeter observatories are…

天体物理学 · 物理学 2017-01-18 C. Matt Bradford , Jonas Zmuidzinas

Absolute spectrophotometric measurements of diffuse radiation at 1 \mu m to 2 \mu m are crucial to our understanding of the radiative content of the Universe from nucleosynthesis since the epoch of reionization, the composition and…

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

We present far-infrared and millimetric observations of a sample of 3C objects. Millimetre data were taken at 1.25 mm with the IRAM 30m antenna feeding the MPIfR bolometer array. Mid-infrared (MIR) and far-infrared (FIR) photometry were…

天体物理学 · 物理学 2016-08-30 Paola Andreani , Robert A. E. Fosbury , Ilse van Bemmel , Wolfram Freudling

The Diffuse Interstellar Bands (DIBs) are absorption features seen in the spectra of astronomical objects, that arise in the interstellar medium. Today more than 500 DIBs have been observed mostly in the optical and near-infrared…

星系天体物理 · 物理学 2021-12-11 Leander Schlarmann , Bernard Foing , Jan Cami , Haoyu Fan

Recent optical observations have led to a significant progress in our understanding of galaxy formation and evolution. However, our view on the deep universe is currently limited to the starlight which directly escapes from high-redshift…

天体物理学 · 物理学 2007-05-23 B. Guiderdoni

A combination of evidence is presented suggesting that the majority of the stars in today's galaxies were born during a luminous infrared phase (LIRP) triggered by the local environment of galaxies. The CIRB is a fossil record of these…

天体物理学 · 物理学 2009-11-10 David Elbaz , Delphine Marcillac , Emmanuel Moy

NICMOS observations of the resolved object fluxes in the Hubble Deep Field North and the Hubble Ultra Deep Field are significantly below the fluxes attributed to a 1.4 - 1.8 microns Near InfraRed Background Excess (NIRBE) from previous low…

天体物理学 · 物理学 2008-11-26 Rodger I. Thompson , Daniel Eisenstein , Xiaohui Fan , Marcia Rieke , Robert C. Kennicutt

Diffuse interstellar bands (DIBs) are absorption features commonly observed in optical/near-infrared spectra of stars and thought to be associated with polyatomic molecules that comprise a significant reservoir of organic material in the…

The Extragalactic Background Light (EBL) as an integrated light from outside of our Galaxy includes information of the early universe and the Dark Ages. We analyzed the spectral data of the astrophysical diffuse emission obtained with the…

宇宙学与河外天体物理 · 物理学 2015-06-16 Kohji Tsumura , Toshio Matsumoto , Shuji Matsuura , Itsuki Sakon , Takehiko Wada

The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. Such suggestions came from 1) the observed merger rate of the BHs, 2) their unusual…

Extragalactic carbon monoxide (CO) line emission will likely be an important signal in current and future Cosmic Microwave Background (CMB) surveys on small scales. However, great uncertainty surrounds our current understanding of CO…

宇宙学与河外天体物理 · 物理学 2025-06-23 Yogesh Mehta , Anirban Roy , Simon Foreman , Alexander van Engelen , Nick Battaglia

We present a full sky 100 micron map that is a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed. Before using the ISSA maps, we remove the remaining artifacts from…

天体物理学 · 物理学 2008-11-26 David J. Schlegel , Douglas P. Finkbeiner , Marc Davis

The FIRBACK (Far Infrared BACKground) survey is one of the deepest imaging surveys carried out at 170 microns with ISOPHOT onboard ISO, and is aimed at the study of the structure of the Cosmic Far Infrared Background. This paper provides…

The intervening large--scale structure distorts cosmic microwave background (CMB) anisotropies via gravitational lensing. The same large--scale structure, traced by dusty star--forming galaxies, also induces anisotropies in the…

天体物理学 · 物理学 2008-11-26 Yong-Seon Song , Asantha Cooray , Lloyd Knox , Matias Zaldarriaga

We present a new analysis of the far-IR emission at high Galactic latitude based on COBE and HI data. A decomposition of the Far-IR emission over the HI, H^+ and H_2 Galactic gas components and the Cosmic Far InfraRed Background (CFIRB) is…

天体物理学 · 物理学 2007-05-23 G. Lagache , A. Abergel , F. Boulanger , F. X. Desert , J. -L. Puget

Delensing is an increasingly important technique to reverse the gravitational lensing of the cosmic microwave background (CMB) and thus reveal primordial signals the lensing may obscure. We present a first demonstration of delensing on…

宇宙学与河外天体物理 · 物理学 2016-10-12 Patricia Larsen , Anthony Challinor , Blake D. Sherwin , Daisy Mak

We have compared the absolute temperature data of the CMB spectrum with models for CMB spectra distorted by a single or two heating processes at different cosmic times. The constraints on the fractional energy injected in the radiation…

天体物理学 · 物理学 2009-11-07 R. Salvaterra , C. Burigana

We investigate the cross-correlation between the cosmic infrared and microwave backgrounds (CIB & CMB) anisotropies through the integrated Sachs-Wolfe effect. We first describe the CIB anisotropies using a linearly biased power spectrum,…

宇宙学与河外天体物理 · 物理学 2015-06-05 Stéphane Ilic
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