1. Joardar, S., S. Bhattacharyya, A. B. Bhattacharyya, and C. R. Datta, "Radio astronomy and super synthesis a survey," Progress In Electromagnetic Research B, Vol. 22, 73-102, 2010.
doi:10.2528/PIERB10032105 Google Scholar
2. Usoslin, I. G., "A history of solar activity over millennia. Living rev.," Solar Physics, Vol. 5, No. 3, 6-19, 2008. Google Scholar
3. Sehorst, C. L., A. V. Silva, and J. E. Costa, "Solar atmospheric model with spicules applied to radio emission," Astronomy and Astrophysics, Vol. 433, 365-374, 2005.
doi:10.1051/0004-6361:20042043 Google Scholar
4. Shibasaki, K., C. E. Alissandrakis, and S. Pojolainen, "Radio emission of the quiet sun and active regions," Solar Physics, Vol. 273, 309-337, 2011.
doi:10.1007/s11207-011-9788-4 Google Scholar
5. Labrum, N. R., "The radio brightness of quiet sun at 21 cm wavelength near sunspot maximum," Australia Journal Physics, Vol. 13, 700-711, 1960.
doi:10.1071/PH600700 Google Scholar
6. Krishnan, T. and N. R. Labrum, "The radio brightness distribution on the sun at 21 cm from combined eclipse and pencil-beam observation," Australia Journal Physics, Vol. 14, 403-419, 1961.
doi:10.1071/PH610403 Google Scholar
7. Shimabukuro, F. I. and J. M. Stacey, "Brightness temperature of the quiet sun at centimeter and millimeter wavelengths," The Astrophysical Journal, Vol. 152, 777-782, 1968.
doi:10.1086/149594 Google Scholar
8. Zirin, H., B. M. Baumert, and G. J. Hurforf, "The microwave brightness temperature spectrum of the quiet sun," The Astrophysical Journal, Vol. 370, 779-783, 1991.
doi:10.1086/169861 Google Scholar
9. Kuseki, R. A., "The solar brightness temperature at millimeter wavelength," Solar Physics, Vol. 48, 41-48, 1976.
doi:10.1007/BF00153329 Google Scholar
10. Dulk, G. A. and D. E Gary, "The sun at 1.4 GHz: Intensity and polarization," Astronomy and Astrophysics, Vol. 124, 103-107, 1983. Google Scholar
11. Nakariakov, V. M., L. K. Kashapova, and Y. H. Yan, "Editorial: Solar radiophysics-recent results on observations and theories," Research in Astronomy and Astrophysics RAA, Vol. 14, No. 7, 1-6, 2014.
doi:10.1088/1674-4527/14/7/001 Google Scholar
12. Tan, C., Y. Yan, B. Tan, Q. Fu, Y. Lin, and G. Xu, "Study of calibration of solar spectrometer and the quiet sun radio emission," The Astrophysical Journal, Vol. 808, No. 61, 21-41, 2015. Google Scholar
13. Wilson, T. L., K. Rohlfs, and S. Huttemeister, Tools of Radio Astronomy, 6th Ed., Springer-Verlag Berlin Heideelberg, 2013.
doi:10.1007/978-3-642-39950-3
14. Ptatap, P. and G. Mclntosh, "Measurements of the radiation from thermal and non thermal radio sources," American Association of Physics Teachers, Vol. 73, No. 5, 399-404, 2004. Google Scholar
15. Neil, K. O., "Single dish calibration techniques at radio wavelength," Astronomical society of the Pacific ASP Conference Series, Vol. 278, San Francisco, CA, 2001. Google Scholar
16. Saha, S. K., Diffraction-limited Imaging with Large and Moderate Telescopes, World Scientific Publishing Co. Pte. Ltd, 2007.
doi:10.1142/6492
17. Pacini, A. A. and J. P. Raulin, "Solar radio emission," Advances in Space Research, Vol. 35, 793-754, 2005. Google Scholar
18. Gary, D. and C. Keller, Solar and Space Weather Radio Physics Current Status and Future Developments , Springer Science + Business Media, INC, 2005.
doi:10.1007/1-4020-2814-8
19. Kalinov, V., "Solar observations with the small radio telescope," Bulgarian Astronomical Journal, Vol. 15, 107-112, 2011. Google Scholar
20. Zaineb, A. J. and K. M. Abood, "Study of some parabolic radio telescope antenna parameter," Iraqi Journal of Science, Special issue, Part B, 453-461, 2016. Google Scholar
21. Hoobi, M. R. and K. M. Abood, "Calibration of a three meter small radio telescope in baghdad university using the sun as a reference source," Iraqi Journal of Science, Vol. 60, No. 1, 171-177, 2019. Google Scholar
22. Abood, K. M. and A. M. Kitas, "Background radio emissions at 1.42 GHz," Iraqi Journal of Science, Vol. 59, No. 2A, 786-791, 2018. Google Scholar
23. Goodman, J. W., Statistical Optics, John Willy & Sons, Inc., New York, 2000.
24., http://www.spaceweather.gc.ca/sx-11-eng.php. Google Scholar
25., Massachusetts Institute of Technology Haystack Observatory. Google Scholar
26. Milligan, T. A., Modern Antenna Design, 2nd Ed., A John Wiley & Sons, Inc., 2005.
doi:10.1002/0471720615
27. Balanis, C. A., Antenna Theory Analysis and Design, 3rd Ed., JohnWiley & Sons, Inc., 2005.