منابع مشابه
A Sample of Astronomical Time Series
The observation of variability in astronomical systems provides astronomers with valuable information on the physical nature of the system. The types of variability which astronomers deal with can be periodic, quasi-periodic, or aperiodic. We collect and describe a number of time series data sets which exemplify the types of problems encountered by the modern astronomer and which demonstrate so...
متن کاملTowards Real-time Classification of Astronomical Transients
Exploration of time domain is now a vibrant area of research in astronomy, driven by the advent of digital synoptic sky surveys. While panoramic surveys can detect variable or transient events, typically some follow-up observations are needed; for short-lived phenomena, a rapid response is essential. Ability to automatically classify and prioritize transient events for follow-up studies becomes...
متن کاملPeriodograms for Multiband Astronomical Time Series
This paper introduces the multiband periodogram, a general extension of the well-known Lomb–Scargle approach for detecting periodic signals in time-domain data. In addition to advantages of the Lomb–Scargle method such as treatment of non-uniform sampling and heteroscedastic errors, the multiband periodogram significantly improves period finding for randomly sampled multiband light curves (e.g....
متن کاملAstronomical Distance Determination Methods and the Light Travel Time Problem
Some recent creationists have attempted to address the light travel time problem indirectly with an implied appeal to a small universe. If the universe is no more than a few thousand light years in size, then the light travel time is eliminated almost by definition. Here I survey the methods used for establishing astronomical distances. The only direct method of measuring stellar distances gene...
متن کاملAstronomical Databases, Space Photometry and Time Series Analysis: Open Questions
How to analyze TeraBytes of photometric data, and extract knowledge on variable stars? How to detect variable phenomena? How to combine different photometric bands? Which algorithm to search for periods? How to characterize and classify the detected variable objects? Many questions, but certainly no definitive answers yet. We present several aspects which are at the interface of photometric sur...
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ژورنال
عنوان ژورنال: Proceedings of the IEEE
سال: 1991
ISSN: 0018-9219
DOI: 10.1109/5.84967