Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants

M. Arnaud; M. Ashdown; F- Atrio-Barandela; J. Aumont; C. Baccigalupi; A.J. Banday; R.B. Barreiro; E. Battaner; K. Benabed; Lévy Benoit; J.-P Bernard; Per Rex Christensen; Pavel Nasselski; Igor Dmitrievich Novikov

doi:10.1051/0004-6361/201425022

Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants

M. Arnaud, M. Ashdown, F- Atrio-Barandela, J. Aumont, C. Baccigalupi, A.J. Banday, R.B. Barreiro, E. Battaner, K. Benabed, Lévy Benoit, J.-P Bernard, Per Rex Christensen, Pavel Nasselski, Igor Dmitrievich Novikov

Teoretisk højenergi, astropartikel og gravitationel fysik

15 Citationer (Scopus)

Abstract

The all-sky Planck survey in 9 frequency bands was used to search for emission from all 274 known Galactic supernova remnants. Of these, 16 were detected in at least two Planck frequencies. The radio-through-microwave spectral energy distributions were compiled to determine the mechanism for microwave emission. In only one case, IC 443, is there high-frequency emission clearly from dust associated with the supernova remnant. In all cases, the low-frequency emission is from synchrotron radiation. As predicted for a population of relativistic particles with energy distribution that extends continuously to high energies, a single power law is evident for many sources, including the Crab and PKS 1209-51/52. A decrease in flux density relative to the extrapolation of radio emission is evident in several sources. Their spectral energy distributions can be approximated as broken power laws, S_ν ∝ ν^-α, with the spectral index, α, increasing by 0.5-1 above a break frequency in the range 10-60 GHz. The break could be due to synchrotron losses.

Originalsprog	Engelsk
Artikelnummer	A134
Tidsskrift	Astronomy & Astrophysics
Vol/bind	586
Antal sider	21
ISSN	0004-6361
DOI	https://doi.org/10.1051/0004-6361/201425022
Status	Udgivet - 1 feb. 2016

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10.1051/0004-6361/201425022

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Arnaud, M., Ashdown, M., Atrio-Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Benabed, K., Benoit, L., Bernard, J. -P., Christensen, P. R., Nasselski, P., & Novikov, I. D. (2016). Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants. Astronomy & Astrophysics, 586, [A134]. https://doi.org/10.1051/0004-6361/201425022

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title = "Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants",

abstract = "The all-sky Planck survey in 9 frequency bands was used to search for emission from all 274 known Galactic supernova remnants. Of these, 16 were detected in at least two Planck frequencies. The radio-through-microwave spectral energy distributions were compiled to determine the mechanism for microwave emission. In only one case, IC 443, is there high-frequency emission clearly from dust associated with the supernova remnant. In all cases, the low-frequency emission is from synchrotron radiation. As predicted for a population of relativistic particles with energy distribution that extends continuously to high energies, a single power law is evident for many sources, including the Crab and PKS 1209-51/52. A decrease in flux density relative to the extrapolation of radio emission is evident in several sources. Their spectral energy distributions can be approximated as broken power laws, Sν ∝ ν-α, with the spectral index, α, increasing by 0.5-1 above a break frequency in the range 10-60 GHz. The break could be due to synchrotron losses.",

author = "M. Arnaud and M. Ashdown and F- Atrio-Barandela and J. Aumont and C. Baccigalupi and A.J. Banday and R.B. Barreiro and E. Battaner and K. Benabed and L{\'e}vy Benoit and J.-P Bernard and Christensen, {Per Rex} and Pavel Nasselski and Novikov, {Igor Dmitrievich}",

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doi = "10.1051/0004-6361/201425022",

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T1 - Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants

AU - Arnaud, M.

AU - Ashdown, M.

AU - Atrio-Barandela, F-

AU - Aumont, J.

AU - Baccigalupi, C.

AU - Banday, A.J.

AU - Barreiro, R.B.

AU - Battaner, E.

AU - Benabed, K.

AU - Benoit, Lévy

AU - Bernard, J.-P

AU - Christensen, Per Rex

AU - Nasselski, Pavel

AU - Novikov, Igor Dmitrievich

PY - 2016/2/1

Y1 - 2016/2/1

N2 - The all-sky Planck survey in 9 frequency bands was used to search for emission from all 274 known Galactic supernova remnants. Of these, 16 were detected in at least two Planck frequencies. The radio-through-microwave spectral energy distributions were compiled to determine the mechanism for microwave emission. In only one case, IC 443, is there high-frequency emission clearly from dust associated with the supernova remnant. In all cases, the low-frequency emission is from synchrotron radiation. As predicted for a population of relativistic particles with energy distribution that extends continuously to high energies, a single power law is evident for many sources, including the Crab and PKS 1209-51/52. A decrease in flux density relative to the extrapolation of radio emission is evident in several sources. Their spectral energy distributions can be approximated as broken power laws, Sν ∝ ν-α, with the spectral index, α, increasing by 0.5-1 above a break frequency in the range 10-60 GHz. The break could be due to synchrotron losses.

AB - The all-sky Planck survey in 9 frequency bands was used to search for emission from all 274 known Galactic supernova remnants. Of these, 16 were detected in at least two Planck frequencies. The radio-through-microwave spectral energy distributions were compiled to determine the mechanism for microwave emission. In only one case, IC 443, is there high-frequency emission clearly from dust associated with the supernova remnant. In all cases, the low-frequency emission is from synchrotron radiation. As predicted for a population of relativistic particles with energy distribution that extends continuously to high energies, a single power law is evident for many sources, including the Crab and PKS 1209-51/52. A decrease in flux density relative to the extrapolation of radio emission is evident in several sources. Their spectral energy distributions can be approximated as broken power laws, Sν ∝ ν-α, with the spectral index, α, increasing by 0.5-1 above a break frequency in the range 10-60 GHz. The break could be due to synchrotron losses.

U2 - 10.1051/0004-6361/201425022

DO - 10.1051/0004-6361/201425022

M3 - Journal article

SN - 0004-6361

VL - 586

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

M1 - A134

ER -

Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants

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