Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... Average annual indices . ... September . ... September, 1998 . Visual indices of solar activity by National Geophysical Data Center . ... Average . ...
... Printed in U.S.A. DISCOVERY OF A z p 4.93, X-RAY SELECTED QUASAR BY THE CHANDRA MULTIWAVELENGTH PROJECT (ChaMP) John D. Silverman,1,2,3 Paul J. Green,1 Dong-Woo Kim,1 Belinda J. Wilkes,1 Robert A. Cameron,1 David ... Jannuzi,8 and Smita Mathur9 Received 2002 January 22; accepted 2002 February 28; published 2002 March 11 1 ABSTRACT We present X-ray and optical obser vations of CXOMP J213945.0 ... Table 1 lists the measured 5 X-ray and optical properties of CXOMP J213945.0 234655. ...
... Notes on Reading the Radio Frequency Allocation Table . ... Footnotes relevant to radio astronomy, the earth exploration-satellite(passive) or space research(passive) are summarized by all lowercase letters. ... radio astronomy protected by S5.149 . ... radio astronomy protected by G6 . ... The bands 1 370 - 1 400 MHz, 2 640 - 2 655 MHz, 4 950 - 4 990 MHz and 15.20 - 15.35 GHz are also allocated to the space research (passive) and earth exploration-satellite (passive) services on a secondary basis. ...
Development of a Software Package for the Reduction and Analysis of Video Records of Meteors A thesis submitted for the degree of Do ctor of Philosophy by Prakash Atreya, B.Sc. Armagh Observatory Armagh, Northern Ireland & Faculty of Science and Agriculture Department of Pure and Applied Physics The Queen's University of Belfast Belfast, Northern Ireland June 2009 Acknowledgements I want to thank Ap ostolos Christou (Tolis of the PhD, for providing articulate and available seven days a week. I thank him pro
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