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dc.contributor.authorAde, P. A. R
dc.contributor.authorBattaner López, Eduardo
dc.identifier.citationAde, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Atrio-Barandela, F., Aumont, J., ... & Bartlett, J. G. (2013). Planck intermediate results-IX. Detection of the Galactic haze with Planck. Astronomy & Astrophysics, 554, A139. [doi:10.1051/0004-6361/201220271]es_ES
dc.description.abstractUsing precise full-sky observations from Planck, and applying several methods of component separation, we identify and characterise the emission fromthe Galactic “haze” at microwave wavelengths. The haze is a distinct component of diffuse Galactic emission, roughly centered on the Galactic centre, and extends to |b| ∼ 35−50◦ in Galactic latitude and |l| ∼ 15−20◦ in longitude. By combining the Planck data with observations from the Wilkinson Microwave Anisotropy Probe, we were able to determine the spectrum of this emission to high accuracy, unhindered by the strong systematic biases present in previous analyses. The derived spectrum is consistent with power-law emission with a spectral index of −2.56 ± 0.05, thus excluding free-free emission as the source and instead favouring hard-spectrum synchrotron radiation from an electron population with a spectrum (number density per energy) dN/dE ∝ E−2.1. At Galactic latitudes |b| < 30◦, the microwave haze morphology is consistent with that of the Fermi gamma-ray “haze” or “bubbles”, while at b ∼ −50◦ we have identified an edge in the microwave haze that is spatially coincident with the edge in the gamma-ray bubbles. Taken together, this indicates that we have a multi-wavelength view of a distinct component of our Galaxy. Given both the very hard spectrum and the extended nature of the emission, it is highly unlikely that the haze electrons result from supernova shocks in the Galactic disk. Instead, a new astrophysical mechanism for cosmic-ray acceleration in the inner Galaxy is implied.es_ES
dc.description.sponsorshipEuropean Space Agencyes_ES
dc.description.sponsorshipCentre National D'etudes Spatialeses_ES
dc.description.sponsorshipCNRS/INSU-IN2P3-INP (France)es_ES
dc.description.sponsorshipAgenzia Spaziale Italiana (ASI)es_ES
dc.description.sponsorshipItalian National Research Counciles_ES
dc.description.sponsorshipIstituto Nazionale Astrofisica (INAF)es_ES
dc.description.sponsorshipNational Aeronautics & Space Administration (NASA)es_ES
dc.description.sponsorshipUnited States Department of Energy (DOE)es_ES
dc.description.sponsorshipScience & Technology Facilities Council (STFC)es_ES
dc.description.sponsorshipUKSA (UK)es_ES
dc.description.sponsorshipConsejo Superior de Investigaciones Cientificas (CSIC)es_ES
dc.description.sponsorshipSpanish Governmentes_ES
dc.description.sponsorshipJA (Spain)es_ES
dc.description.sponsorshipFinnish Funding Agency for Technology & Innovation (TEKES)es_ES
dc.description.sponsorshipAoF (Finland)es_ES
dc.description.sponsorshipCSC (Finland)es_ES
dc.description.sponsorshipHelmholtz Association German Aerospace Centre (DLR)es_ES
dc.description.sponsorshipMax Planck Societyes_ES
dc.description.sponsorshipCSA (Canada)es_ES
dc.description.sponsorshipDTU Space (Denmark)es_ES
dc.description.sponsorshipSER/SSO (Switzerland)es_ES
dc.description.sponsorshipRCN (Norway)es_ES
dc.description.sponsorshipScience Foundation Irelandes_ES
dc.description.sponsorshipPortuguese Foundation for Science and Technologyes_ES
dc.description.sponsorshipEuropean Union (EU)es_ES
dc.description.sponsorshipNational Aeronautics & Space Administration (NASA)es_ES
dc.description.sponsorshipHarvey L. Karp Discovery Awardes_ES
dc.description.sponsorshipScience & Technology Facilities Council (STFC) ST/G003874/1 ST/J00152X/1 ST/J001562/1 ST/J004812/1 ST/I005765/1 ST/J001538/1 ST/K000985/1 ST/K003674/1 ST/L001314/1es_ES
dc.publisherEdp Sciencies S.Aes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subjectGalaxy: nucleuses_ES
dc.subjectISM: structurees_ES
dc.subjectISM: bubbleses_ES
dc.subjectRadio continuum: ISMes_ES
dc.titlePlanck intermediate results IX. Detection of the Galactic haze with Planckes_ES

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Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España