Intra-Day Simultaneous Optical Monitoring of S5 0716+714

We present the results of simultaneous optical multi-color observations of BL Lac object 0716+714 in November 2014 and February 2016. The intra-day variability (IDV) varies from 0.04 to 0.3 mags. Both achromatic and bluer-when-brighter (BWB) color behaviors were detected. A probable quasi-periodic o...

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Main Authors:	Xiaoyuan Zhang, Jianghua Wu, Zhongyi Man
Format:	Article
Language:	English
Published:	MDPI AG 2016-09-01
Series:	Galaxies
Subjects:	galaxies: active BL Lac Objects: individual: S5 0716+714 galaxies: photometry
Online Access:	http://www.mdpi.com/2075-4434/4/3/25

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record_format	Article
spelling	doaj-681cf94b3be5480eae1420f9aff9e2562020-11-24T23:06:45ZengMDPI AGGalaxies2075-44342016-09-01432510.3390/galaxies4030025galaxies4030025Intra-Day Simultaneous Optical Monitoring of S5 0716+714Xiaoyuan Zhang0Jianghua Wu1Zhongyi Man2Department of Astronomy, Beijing Normal University, Beijing 100875, ChinaDepartment of Astronomy, Beijing Normal University, Beijing 100875, ChinaDepartment of Astronomy, Physics School, Peking University, Beijing 100871, ChinaWe present the results of simultaneous optical multi-color observations of BL Lac object 0716+714 in November 2014 and February 2016. The intra-day variability (IDV) varies from 0.04 to 0.3 mags. Both achromatic and bluer-when-brighter (BWB) color behaviors were detected. A probable quasi-periodic oscillation overlapping on a significant flare was also observed. We used the interpolated cross-correlation function to calculate time lags between light curves in different bands. Variations in the B and R lagging behind that in the I band were found, which corresponds with anti-clockwise loops on the color-magnitude diagrams.http://www.mdpi.com/2075-4434/4/3/25galaxies: activeBL Lac Objects: individual: S5 0716+714galaxies: photometry
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Xiaoyuan Zhang Jianghua Wu Zhongyi Man
spellingShingle	Xiaoyuan Zhang Jianghua Wu Zhongyi Man Intra-Day Simultaneous Optical Monitoring of S5 0716+714 Galaxies galaxies: active BL Lac Objects: individual: S5 0716+714 galaxies: photometry
author_facet	Xiaoyuan Zhang Jianghua Wu Zhongyi Man
author_sort	Xiaoyuan Zhang
title	Intra-Day Simultaneous Optical Monitoring of S5 0716+714
title_short	Intra-Day Simultaneous Optical Monitoring of S5 0716+714
title_full	Intra-Day Simultaneous Optical Monitoring of S5 0716+714
title_fullStr	Intra-Day Simultaneous Optical Monitoring of S5 0716+714
title_full_unstemmed	Intra-Day Simultaneous Optical Monitoring of S5 0716+714
title_sort	intra-day simultaneous optical monitoring of s5 0716+714
publisher	MDPI AG
series	Galaxies
issn	2075-4434
publishDate	2016-09-01
description	We present the results of simultaneous optical multi-color observations of BL Lac object 0716+714 in November 2014 and February 2016. The intra-day variability (IDV) varies from 0.04 to 0.3 mags. Both achromatic and bluer-when-brighter (BWB) color behaviors were detected. A probable quasi-periodic oscillation overlapping on a significant flare was also observed. We used the interpolated cross-correlation function to calculate time lags between light curves in different bands. Variations in the B and R lagging behind that in the I band were found, which corresponds with anti-clockwise loops on the color-magnitude diagrams.
topic	galaxies: active BL Lac Objects: individual: S5 0716+714 galaxies: photometry
url	http://www.mdpi.com/2075-4434/4/3/25
work_keys_str_mv	AT xiaoyuanzhang intradaysimultaneousopticalmonitoringofs50716714 AT jianghuawu intradaysimultaneousopticalmonitoringofs50716714 AT zhongyiman intradaysimultaneousopticalmonitoringofs50716714
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Intra-Day Simultaneous Optical Monitoring of S5 0716+714

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