QUIJOTE scientific results -- X. Spatial variations of Anomalous Microwave Emission along the Galactic plane

Abstract

Anomalous Microwave Emission (AME) is an important emission component between 10 and 60 GHz that is not yet fully understood. It seems to be ubiquituous in our Galaxy and is observed at a broad range of angular scales. Here we use the new QUIJOTE-MFI wide survey data at 11, 13, 17 and 19 GHz to constrain the AME in the Galactic plane ($|b|<10^{\circ }$) on degree scales. We built the spectral energy distribution between 0.408 and 3000 GHz for each of the 5309 0.9${}^{\circ }$ pixels in the Galactic plane, and fitted a parametric model by considering five emission components: synchrotron, free-free, AME, thermal dust and CMB anisotropies. We show that not including QUIJOTE-MFI data points leads to the underestimation (up to 50 %) of the AME signal in favour of free-free emission. The parameters describing these components are then intercompared, looking for relations that help to understand AME physical processes. We find median values for the AME width, $W_{\mathrm{AME}}$, and for its peak frequency, ${\nu }_{\mathrm{AME}}$, respectively of $0.560_{-0.050}^{+0.059}$ and $20.7_{-1.9}^{+2.0}$ GHz, slightly in tension with current theoretical models. We find spatial variations throughout the Galactic plane for ${\nu }_{\mathrm{AME}}$, but only with reduced statistical significance. We report correlations of AME parameters with certain ISM properties, such as that between the AME emissivity (which shows variations with the Galactic longitude) and the interstellar radiation field, and that between the AME peak frequency and dust temperature. Finally, we discuss the implications of our results on the possible molecules responsible for AME.

arXiv comment32 pages, 31 figures. Accepted for publication in MNRAS. Derived data products available at https://research.iac.es/proyecto/quijote

References in corpus (90)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
• The Spitzer Space Telescope Mission
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• The SIMBAD astronomical database
• Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
• Infrared Emission from Interstellar Dust. II. The Diffuse Interstellar Medium
• The Temperature of the Cosmic Microwave Background
• Planck 2013 results. XI. All-sky model of thermal dust emission
• The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: I. Limits and Detections
• A Full-Sky H-alpha Template for Microwave Foreground Prediction
• IRIS: A new generation of IRAS maps
• Electric Dipole Radiation from Spinning Dust Grains
• The Wisconsin H-Alpha Mapper Northern Sky Survey
• The global dust SED: Tracing the nature and evolution of dust with DustEM
• Diffuse Galactic Emission from Spinning Dust Grains
• Planck intermediate results. LVII. Joint Planck LFI and HFI data processing
• Joint Bayesian component separation and CMB power spectrum estimation
• An Anomalous Component of Galactic Emission
• Microwave Emission at High Galactic Latitudes
• Magnetic Dipole Microwave Emission from Dust Grains
• Planck early results. XX. New light on anomalous microwave emission from spinning dust grains
• Galactic synchrotron emission with cosmic ray propagation models
• A refined model for spinning dust radiation
• A determination of the Spectra of Galactic components observed by WMAP
• Magnetic Nanoparticles in the Interstellar Medium: Emission Spectrum and Polarization
• Galactic microwave emission at degree angular scales
• LiteBIRD: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization
• Detection of anomalous microwave emission in the Perseus molecular cloud with the COSMOSOMAS experiment
• The State-of-Play of Anomalous Microwave Emission (AME) Research
• Spinning dust emission: the effect of rotation around a non-principal axis
• Cross-correlation of Tenerife data with Galactic templates - evidence for spinning dust?
• Dark gas in the solar neighnorhood from extinction data
• The Detection of Anomalous Dust Emission in the Nearby Galaxy NGC 6946
• S-band Polarization All Sky Survey (S-PASS): survey description and maps
• Full Sky Study of Diffuse Galactic Emission at Decimeter Wavelengths
• Planck intermediate results. XIV. Dust emission at millimetre wavelengths in the Galactic plane
• Planck 2013 results. V. LFI calibration
• Measurements of the Intensity and Polarization of the Anomalous Microwave Emission in the Perseus molecular complex with QUIJOTE
• Modeling the Anomalous Microwave Emission with Spinning Nanoparticles: No PAHs Required
• Radio to infrared spectra of late-type galaxies with Planck and WMAP data
• QUIJOTE Scientific Results. II. Polarisation Measurements of the Microwave Emission in the Galactic molecular complexes W43 and W47 and supernova remnant W44
• A Case Against Spinning PAHs as the Source of the Anomalous Microwave Emission
• Anomalous Microwave Emission from the HII region RCW175
• Polarization of Magnetic Dipole Emission and Spinning Dust Emission from Magnetic Nanoparticles
• The C-Band All-Sky Survey (C-BASS): Design and capabilities
• QUIJOTE scientific results -- IV. A northern sky survey in intensity and polarization at 10-20GHz with the Multi-Frequency Instrument
• The Quijote CMB Experiment
• Planck intermediate results. XXV. The Andromeda Galaxy as seen by Planck
• H-alpha and Free-Free Emission from the WIM
• Constraints on the Polarization of the Anomalous Microwave Emission in the Perseus Molecular Complex from 7-year WMAP data
• Microwave observations of spinning dust emission in NGC6946
• COSMOSOMAS Observations of the CMB and Galactic Foregrounds at 11 GHz: Evidence for anomalous microwave emission at high Galactic Latitude
• The Star Formation in Radio Survey: 3 - 33 GHz Imaging of Nearby Galaxy Nuclei and Extranuclear Star-forming Regions
• Monte Carlo error analyses of Spearman's rank test
• Characterizing Extragalactic Anomalous Microwave Emission in NGC 6946 with CARMA
• C-Band All-Sky Survey: A First Look at the Galaxy
• Modelling the spinning dust emission from dense interstellar clouds
• Polycyclic Aromatic Hydrocarbons, the Anomalous Microwave Emission, and Their Connection to the Cold Neutral Medium
• Strong evidence of Anomalous Microwave Emission from the flux density spectrum of M31
• A New Detection of Extragalactic Anomalous Microwave Emission in a Compact, Optically-Faint Region of NGC\,4725
• IR-correlated 31 GHz radio emission from Orion East
• Detection of Spectral Variations of Anomalous Microwave Emission with QUIJOTE and C-BASS
• BeyondPlanck XIII. Intensity foreground sampling, degeneracies, and priors
• New radio observations of anomalous microwave emission in the HII region RCW175
• Derivation of an Analytical Approximation of the Spectrum of Spinning Dust Emission
• Detection of Anomalous Microwave Emission in the Pleiades Reflection Nebula with WMAP and the COSMOSOMAS Experiment
• Investigation of the Origin of the Anomalous Microwave Emission in Lambda Orionis
• COMAP Early Science: VI. A First Look at the COMAP Galactic Plane Survey
• QUIJOTE scientific results -- VIII. Diffuse polarized foregrounds from component separation with QUIJOTE-MFI
• AMI Observations of the Anomalous Microwave Emission in the Perseus Molecular Cloud
• Spinning dust radiation: a review of the theory
• The C-Band All-Sky Survey (C-BASS): Template Fitting of Diffuse Galactic Microwave Emission in the Northern Sky
• A 33 GHz VSA survey of the Galactic plane from 27 to 46 degrees
• Planck Observations of M33
• Resolved spectral variations of the centimetre-wavelength continuum from the rho Oph W photo-dissociation-region
• QUIJOTE Scientific results. III. Microwave spectrum of intensity and polarization in the Taurus molecular cloud Complex and L1527
• Spinning nano-carbon grains: Viable origin for anomalous microwave emission
• Resolved observations at 31 GHz of spinning dust emissivity variations in $\rho$ Oph
• QUIJOTE Scientific Results -- VII. Galactic AME sources in the QUIJOTE-MFI Northern Hemisphere Wide-Survey
• Modelling the spinning dust emission from LDN 1780
• Searching for Anomalous Microwave Emission in nearby galaxies. K-band observations with the Sardinia Radio Telescope
• Fastcc: fast colour corrections for broadband radio telescope data
• QUIJOTE scientific results -- V. The microwave intensity and polarisation spectra of the Galactic regions W49, W51 and IC443

Cited by in corpus (5)

• QUIJOTE Scientific Results -- XVII. Studying the Anomalous Microwave Emission in the Andromeda Galaxy with QUIJOTE-MFI
• QUIJOTE scientific results -- XVIII. New constraints on the polarization of the Anomalous Microwave Emission in bright Galactic regions: $\rho$\,Ophiuchi, Perseus and W43
• Nearly Full-Sky Low-Multipole Cosmic Microwave Temperature Anisotropy: I. Foreground Cleaned Maps
• Radio-to-Submillimetre Spectral Energy Distributions of NGC 1365
• Far-infrared to centimeter emission of very nearby galaxies with archival data