منابع مشابه
Confirmation of the 62 Day X-ray Periodicity from M82
Using 400 days of new X-ray monitoring of M82, we confirm the 62 day periodicity previously reported. In the full data set spanning 1124 days, we find a period of 62.0± 0.3 days and a coherence, Q = 22.3, that is consistent with a strictly periodic signal. We estimate that the probability of chance occurrence of our observed signal is 6× 10. The light curve folded at this period is roughly sinu...
متن کاملOn the Stability of the 421 - day Periodicity in A 0538 – 66
In this paper we analyse 70 years of archival Harvard and Schmidt plate data of the 16.6 d Be X-ray binary A0538–66 in order to search for the presence of the long-term period of 420.82 ± 0.79 d found in MACHO photometry (Alcock et al. 2001). We find evidence for a long-term period of 421.29 ± 0.95 d in the archival data, and examine its stability. We also combine the archival and MACHO dataset...
متن کاملsurvey on the rule of the due & hindering relying on the sheikh ansaris ideas
قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
15 صفحه اولOn the Frequency and Periodicity of Infinite Words On the Frequency and Periodicity of Infinite Words
This work contributes to two aspects of the understanding of infinite words: the frequency of letters in a morphic sequence and periodicity considerations on infinite words. First, we develop a necessary and sufficient criteria for the existence of the frequency of a letter in a morphic sequence, and give some applications of this result. We show that the frequencies of all letters exist in pur...
متن کاملPeriodicity properties on partial
The concept of periodicity has played over the years a centra1 role in the development of combinatorics on words and has been a highly valuable too1 for the design and analysis of algorithms. Fine and Wilf’s famous periodicity result, which is one of the most used and known results on words, has extensions to partia1 words, or sequences that may have a number of “do not know” symbols. These ext...
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ژورنال
عنوان ژورنال: Journal of the Meteorological Society of Japan. Ser. II
سال: 1952
ISSN: 0026-1165,2186-9057
DOI: 10.2151/jmsj1923.30.12_403