Looking at Blazar Light-curve Periodicities with Gaussian Processes

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Detecting periodicities with Gaussian processes

5 We consider the problem of detecting and quantifying the periodic component of 6 a function given noise-corrupted observations of a limited number of input/output tu7 ples. Our approach is based on Gaussian process regression which provides a flexible 8 non-parametric framework for modelling periodic data. We introduce a novel decom9 position of the covariance function as the sum of periodic ...

متن کامل

A temporal model of text periodicities using Gaussian Processes

Temporal variations of text are usually ignored in NLP applications. However, text use changes with time, which can affect many applications. In this paper we model periodic distributions of words over time. Focusing on hashtag frequency in Twitter, we first automatically identify the periodic patterns. We use this for regression in order to forecast the volume of a hashtag based on past data. ...

متن کامل

Looking at teeth in a new light.

T eeth are the most common elements in the mammalian fossil record. Thus it is not surprising that they have yielded many insights into the lives of extinct creatures. When researchers in the 1970s noted that subtle differences in molar tooth shape could be correlated with significant dietary differences (1–7), it opened the door for a vast array of ‘‘functional analyses’’ of teeth in which var...

متن کامل

A Quasi-Periodic Modulation of the Radio Light Curve of the Blazar PKSB0048−097

In this letter we present the results of a wavelet analysis of the radio light curve of the BLLac Object PKSB0048−097 from the University of Michigan Radio Astronomy Observatory monitoring program at 8GHz during twenty-five years, from 1979 to 2004. The results show a remarkable periodicity of 450–470 days in the early 1980s that changed to a ∼585 day periodicity in the late 1980s to early 1990...

متن کامل

The Rate of Entropy for Gaussian Processes

In this paper, we show that in order to obtain the Tsallis entropy rate for stochastic processes, we can use the limit of conditional entropy, as it was done for the case of Shannon and Renyi entropy rates. Using that we can obtain Tsallis entropy rate for stationary Gaussian processes. Finally, we derive the relation between Renyi, Shannon and Tsallis entropy rates for stationary Gaussian proc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The Astrophysical Journal

سال: 2020

ISSN: 1538-4357

DOI: 10.3847/1538-4357/ab8bd4