%0 Journal Article %1 WOS:000387788600030 %A de Freitas, D B %A Nepomuceno, M M F %A de Moraes Junior, P R V %A Lopes, C E F %A Chagas, M L Das %A Bravo, J P %A Costa, A D %A Martins, B L Canto %A Medeiros, J R De %A Leao, I C %C TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND %D 2016 %I IOP PUBLISHING LTD %J ASTROPHYSICAL JOURNAL %K Sun: analysis; data rotation; rotation} solar-type; stars: {methods: %N 1 %R 10.3847/0004-637X/831/1/87 %T NEW SUNS IN THE COSMOS. III. MULTIFRACTAL SIGNATURE ANALYSIS %V 831 %X In the. present paper, we investigate the multifractality signatures in hourly time series extracted from the CoRoTspacecraft database. Our analysis is intended to highlight the possibility that astrophysical time series can be members. of a particular class of complex and dynamic processes, which require several photometric variability diagnostics to characterize their structural and topological properties. To achieve this goal, we search for contributions due to a. nonlinear temporal correlation and effects caused by heavier tails than the Gaussian distribution, using a detrending moving average algorithm for one-dimensional multifractal signals (MFDMA). We observe that the correlation structure is the main source of multifractality, while heavy-tailed distribution plays a minor role in generating the multifractal effects. Our work also reveals that the rotation period of stars is inherently scaled by the degree of multifractality. As a result, analyzing the multifractal degree of the. referred series, we uncover an evolution of multifractality from shorter to larger periods.

@article{WOS:000387788600030, abstract = {In the. present paper, we investigate the multifractality signatures in hourly time series extracted from the CoRoTspacecraft database. Our analysis is intended to highlight the possibility that astrophysical time series can be members. of a particular class of complex and dynamic processes, which require several photometric variability diagnostics to characterize their structural and topological properties. To achieve this goal, we search for contributions due to a. nonlinear temporal correlation and effects caused by heavier tails than the Gaussian distribution, using a detrending moving average algorithm for one-dimensional multifractal signals (MFDMA). We observe that the correlation structure is the main source of multifractality, while heavy-tailed distribution plays a minor role in generating the multifractal effects. Our work also reveals that the rotation period of stars is inherently scaled by the degree of multifractality. As a result, analyzing the multifractal degree of the. referred series, we uncover an evolution of multifractality from shorter to larger periods.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND}, author = {de Freitas, D B and Nepomuceno, M M F and de Moraes Junior, P R V and Lopes, C E F and Chagas, M L Das and Bravo, J P and Costa, A D and Martins, B L Canto and Medeiros, J R De and Leao, I C}, biburl = {https://www.bibsonomy.org/bibtex/282a4d6302c276e197a5b6257b109f23c/ppgfis_ufc_br}, doi = {10.3847/0004-637X/831/1/87}, interhash = {72d944addec7cf8c421bcf1311fc4138}, intrahash = {82a4d6302c276e197a5b6257b109f23c}, issn = {0004-637X}, journal = {ASTROPHYSICAL JOURNAL}, keywords = {Sun: analysis; data rotation; rotation} solar-type; stars: {methods:}, number = 1, publisher = {IOP PUBLISHING LTD}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {NEW SUNS IN THE COSMOS. III. MULTIFRACTAL SIGNATURE ANALYSIS}, tppubtype = {article}, volume = 831, year = 2016 }