Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz
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In this paper, the average brightness temperatures and surface brightnesses at 1420, 820 and 408 MHz of the six main Galactic radio-continuum loops are derived, as are their radio spectral indices. The temperatures and surface brightnesses of the radio loops are computed using data taken from radio-continuum surveys at 1420, 820 and 408 MHz. We have demonstrated the reality of Loops V and VI and present diagrams of their spectra for the first time. We derived the radio spectral indices of Galactic radio loops from radio surveys at three frequencies (1420, 820 and 408 MHz) and confirm them to be non-thermal sources. Diameters and distances of Loops I-VI were also calculated. The results obtained are in good agreement with current theories of supernova remnant (SNR) evolution and suggest that radio loops may have a SNR origin.
Кључне речи:
radiation mechanisms : non-thermal / surveys / ISM : kinematics and dynamics / supernova remnantsИзвор:
Monthly Notices of the Royal Astronomical Society, 2007, 376, 2, 634-644
DOI: 10.1111/j.1365-2966.2007.11499.x
ISSN: 0035-8711
WoS: 000245697400014
Scopus: 2-s2.0-34247210839
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VinčaTY - JOUR AU - Borka Jovanović, Vesna PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3186 AB - In this paper, the average brightness temperatures and surface brightnesses at 1420, 820 and 408 MHz of the six main Galactic radio-continuum loops are derived, as are their radio spectral indices. The temperatures and surface brightnesses of the radio loops are computed using data taken from radio-continuum surveys at 1420, 820 and 408 MHz. We have demonstrated the reality of Loops V and VI and present diagrams of their spectra for the first time. We derived the radio spectral indices of Galactic radio loops from radio surveys at three frequencies (1420, 820 and 408 MHz) and confirm them to be non-thermal sources. Diameters and distances of Loops I-VI were also calculated. The results obtained are in good agreement with current theories of supernova remnant (SNR) evolution and suggest that radio loops may have a SNR origin. T2 - Monthly Notices of the Royal Astronomical Society T1 - Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz VL - 376 IS - 2 SP - 634 EP - 644 DO - 10.1111/j.1365-2966.2007.11499.x ER -
@article{ author = "Borka Jovanović, Vesna", year = "2007", abstract = "In this paper, the average brightness temperatures and surface brightnesses at 1420, 820 and 408 MHz of the six main Galactic radio-continuum loops are derived, as are their radio spectral indices. The temperatures and surface brightnesses of the radio loops are computed using data taken from radio-continuum surveys at 1420, 820 and 408 MHz. We have demonstrated the reality of Loops V and VI and present diagrams of their spectra for the first time. We derived the radio spectral indices of Galactic radio loops from radio surveys at three frequencies (1420, 820 and 408 MHz) and confirm them to be non-thermal sources. Diameters and distances of Loops I-VI were also calculated. The results obtained are in good agreement with current theories of supernova remnant (SNR) evolution and suggest that radio loops may have a SNR origin.", journal = "Monthly Notices of the Royal Astronomical Society", title = "Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz", volume = "376", number = "2", pages = "634-644", doi = "10.1111/j.1365-2966.2007.11499.x" }
Borka Jovanović, V.. (2007). Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz. in Monthly Notices of the Royal Astronomical Society, 376(2), 634-644. https://doi.org/10.1111/j.1365-2966.2007.11499.x
Borka Jovanović V. Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz. in Monthly Notices of the Royal Astronomical Society. 2007;376(2):634-644. doi:10.1111/j.1365-2966.2007.11499.x .
Borka Jovanović, Vesna, "Spectral indices of Galactic radio loops between 1420, 820 and 408 MHz" in Monthly Notices of the Royal Astronomical Society, 376, no. 2 (2007):634-644, https://doi.org/10.1111/j.1365-2966.2007.11499.x . .