Probing large scale coherence between Spitzer IR and Chandra X-ray source-subtracted cosmic backgrounds
| Autor: | Nico Cappelluti, Richard G. Arendt, Alexis Finoguenov, Kari Helgason, Yanxia Li, A. Kashlinsky, Guenther Hasinger, Priyamvada Natarajan, Meg Urry |
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| Přispěvatelé: | Department of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Hubble Deep Field DEEP FIELD Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Extended Groth Strip Cosmic infrared background 0103 physical sciences Surface brightness 010303 astronomy & astrophysics BLACK-HOLES Astrophysics::Galaxy Astrophysics Physics High Energy Astrophysical Phenomena (astro-ph.HE) 010308 nuclear & particles physics ORIGIN quasars: supermassive black holes Astronomy and Astrophysics FLUCTUATIONS 115 Astronomy Space science infrared: diffuse background Galaxy Redshift EVOLUTION diffuse radiation Interstellar medium GALAXIES LIGHT 13. Climate action Space and Planetary Science cosmology: observations COSMOLOGY Chandra Deep Field South X-rays: diffuse background Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Cosmology and Nongalactic Astrophysics |
| Popis: | We present new measurements of the large scale clustering component of the cross-power spectra of the source-subtracted Spitzer-IRAC Cosmic Infrared Background (CIB) and Chandra-ACIS Cosmic X-ray Background (CXB) surface brightness fluctuations. Our investigation uses data from the Chandra Deep Field South (CDFS), Hubble Deep Field North (HDFN), EGS/AEGIS field and UDS/SXDF surveys, comprising 1160 Spitzer hours and $\sim$ 12 Ms of Chandra data collected over a total area of 0.3 deg$^2$. We report the first ($>$5$\sigma$) detection of a cross-power signal on large angular scales >20 arcsec between [0.5-2] keV and the 3.6 and 4.5$\mu$m bands, at $\sim$5$\sigma$ and 6.3$\sigma$ significance, respectively. The correlation with harder X-ray bands is marginally significant. Comparing the new observations with existing models for the contribution of the known unmasked source population at $z Comment: 7 pages, 3 figures, accepted by ApJ Letters, v2 slight corrections |
| Databáze: | OpenAIRE |
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