The radio spectrum and magnetic field structure of SNR HB3

被引：0

作者：

Shi, W.B. ^{[1
,3
]}

Han, J.L. ^{[1
]}

Gao, X.Y. ^{[1
]}

Sun, X.H. ^{[1
]}

Xiao, L. ^{[1
]}

Reich, P. ^{[2
]}

Reich, W. ^{[2
]}

机构：

[1] National Astronomical Observatories, Chinese Academy of Sciences, Jia 20 DaTun Road, ChaoYang District, Beijing 100012, China

[2] Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany

[3] School of Space Science and Physics, Shandong University at Weihai, 180 Cultural West Road, Shandong 264209, China

来源：

Astronomy and Astrophysics | 2008年 / 487卷 / 02期

关键词：

Context. Evidence for a spectral flattening of the supernova remnant (SNR) HB3 (G132.7+1.3) was recently claimed in the literature based on previously published total flux density data; and the flattening was further interpreted as the discovery of thermal bremsstrahlung emission in the shell of HB3. Aims. A spectral flattening has never been observed from any SNR before. Reliable observations of HB3 at frequencies above 3000 MHz are crucial to confirm such a spectral behaviour. Methods. We extracted 4800 MHz total intensity and polarisation data of HB3 from the Sino-German 6 cm polarisation survey of the Galactic plane made with the Urumqi 25 m telescope; and analysed the spectrum of HB3; together with Effelsberg data at 1408 MHz and 2675 MHz. Results. We found an overall spectral index of HB3 of α = -0.61 ± 0.06 between 1408 MHz and 4800 MHz; similar to the index at lower frequencies. There is no spectral flattening at high frequencies. We detected strong polarised emission from HB3 at 4800 MHz. Our 4800 MHz data show a tangential field orientation in the HB3 shell. © 2008 ESO;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Journal article (JA)

引用

页码：601 / 604

共 50 条

[1] The radio spectrum and magnetic field structure of SNR HB3
Shi, W. B.
Han, J. L.
Gao, X. Y.
Sun, X. H.
Xiao, L.
Reich, P.
Reich, W.
ASTRONOMY & ASTROPHYSICS, 2008, 487 (02) : 601 - 604
[2] Radio spectral index variations of the SNR HB3
Tian, WW
Leahy, D
ASTRONOMY & ASTROPHYSICS, 2005, 436 (01): : 187 - 193
[3] Radio spectral index variations of the SNR HB3 (vol 436, pg 187, 2005)
Tian, WW
Leahy, DA
ASTRONOMY & ASTROPHYSICS, 2006, 451 (03): : 991 - 991
[4] Radio spectrum and distance of the SNR HB9
Leahy, D.A.
Tian, W.W.
Astronomy and Astrophysics, 1600, 461 (03): : 1013 - 1018
[5] Radio spectrum and distance of the SNR HB9
Leahy, D. A.
Tian, W. W.
ASTRONOMY & ASTROPHYSICS, 2007, 461 (03) : 1013 - 1018
[6] Comments on the radio spectrum of HB 3
Green, D. A.
BULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA, 2007, 35 (02): : 77 - 85
[7] THE STRUCTURE OF ATOMIC AND MOLECULAR GAS IN THE VICINITY OF THE SUPERNOVA REMNANT HB3
ROUTLEDGE, D
DEWDNEY, PE
LANDECKER, TL
VANELDIK, JF
ASTRONOMY & ASTROPHYSICS, 1991, 247 (02) : 529 - 544
[8] Interaction of the supernova remnant HB3 with the ambient interstellar gas
I. V. Gosachinskii
Astronomy Letters, 2005, 31 : 179 - 185
[9] X-RAY OBSERVATIONS OF THE SUPERNOVA REMNANT HB3
LEAHY, DA
JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY OF CANADA, 1984, 78 (05) : 210 - 210
[10] Interaction of the supernova remnant HB3 with the ambient interstellar gas
Gosachinskii, IV
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 2005, 31 (03): : 179 - 185

← 1 2 3 4 5 →