All-sky Galactic radiation at 45 MHz and spectral index between 45 and 408 MHz

被引：0

作者：

Guzmán, A.E. ^{[1
]}

May, J. ^{[1
]}

Alvarez, H. ^{[1
]}

Maeda, K. ^{[2
]}

机构：

[1] Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile

[2] Hyogo University of Health Sciences, Japan

来源：

Astronomy and Astrophysics | 2010年 / 525卷 / 11期

关键词：

Cosmology - Cosmic rays - Synchrotron radiation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Aims. We study the Galactic large-scale synchrotron emission by generating a reliable all-sky spectral index map and temperature map at 45 MHz. Methods. We use our observations, the published all-sky map at 408 MHz, and a bibliographical compilation to produce a map corrected for zero-level offset and extragalactic contribution. Results. We present full sky maps of the Galactic emission at 45 MHz and the Galactic spectral index between 45 and 408 MHz with an angular resolution of 5°. The spectral index varies between 2.1 and 2.7, reaching values below 2.5 at low latitude because of thermal free-free absorption and its maximum in the zone next to the Northern Spur. © 2010 ESO.

引用

共 45 条

[21] THE SPECTRAL INDEX FLUX-DENSITY RELATION AT 408 MHZ AND THE COSMOLOGICAL EVOLUTION OF EXTRAGALACTIC RADIO-SOURCES
KAPAHI, VK
KULKARNI, VK
ASTRONOMY & ASTROPHYSICS, 1986, 165 (1-2) : 39 - 44
[22] Therapeutic ultrasound for osteoradionecrosis:: an in vitro comparison between 1 MHz and 45 kHz machines
Reher, P
Doan, N
Bradnock, B
Meghji, S
Harris, M
EUROPEAN JOURNAL OF CANCER, 1998, 34 (12) : 1962 - 1968
[23] Human dermis ultrasound characterization: Backscattering parameters between 22-45 MHz
Lebertre, M
Ossant, F
Vaillant, L
Diridollou, S
Patat, F
2000 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2, 2000, : 1371 - 1374
[24] GOALS, STRATEGIES AND FIRST DISCOVERIES OF AO327, THE ARECIBO ALL-SKY 327 MHz DRIFT PULSAR SURVEY
Deneva, J. S.
Stovall, K.
McLaughlin, M. A.
Bates, S. D.
Freire, P. C. C.
Martinez, J. G.
Jenet, F.
Bagchi, M.
ASTROPHYSICAL JOURNAL, 2013, 775 (01):
[25] The GMRT 150 MHz all-sky radio survey: First alternative data release TGSS ADR1
1600, EDP Sciences (598):
[26] The GMRT 150 MHz all-sky radio survey First alternative data release TGSS ADR1
Intema, H. T.
Jagannathan, P.
Mooley, K. P.
Frail, D. A.
ASTRONOMY & ASTROPHYSICS, 2017, 598
[27] LINEAR-POLARIZATION OF THE GALACTIC RADIO-EMISSION AT FREQUENCIES BETWEEN 408 AND 1411 MHZ .2. DISCUSSION
SPOELSTRA, TAT
ASTRONOMY & ASTROPHYSICS, 1984, 135 (02): : 238 - 248
[28] The relationship between e region electron density and the power of auroral coherent echoes at 45 MHz
Williams, P.J.S.
Jones, B.
Kustov, A.V.
Uspensky, M.V.
Radio Science, 34 (02): : 449 - 457
[29] The relationship between E region electron density and the power of auroral coherent echoes at 45 MHz
Williams, PJS
Jones, B
Kustov, AV
Uspensky, MV
RADIO SCIENCE, 1999, 34 (02) : 449 - 457
[30] Spatial variation of acoustic parameters in human skin:: An in vitro study between 22 and 45 MHz
Lebertre, M
Ossant, F
Vaillant, L
Diridollou, S
Patat, F
ULTRASOUND IN MEDICINE AND BIOLOGY, 2002, 28 (05): : 599 - 615

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