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Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales. / Goyal, Arti; Soida, Marian; Stawarz, Łukasz; Wiita, Paul J.; Nilsson, Kari; Jorstad, Svetlana; Marscher, Alan P.; Aller, Margo F.; Aller, Hugh D.; Lähteenmäki, Anne; Hovatta, Talvikki; Zoła, Staszek; Nalewajko, Krzysztof; Tornikoski, Merja; Tammi, Joni; Hodges, Mark; Kiehlmann, Sebastian; Readhead, Anthony C. S.; Max-Moerbeck, Walter; Lindfors, Elina; Ramazani, Vandad Fallah; Reichart, D. E.; Caton, D. B.; Valverde, Janeth; Horan, Deirdre; Ojha, Roopesh; van Zyl, Pfesesani.

In: The Astrophysical Journal, Vol. 927, No. 2, 2022.

Research output: Contribution to journal › Article › peer-review

Harvard

Goyal, A, Soida, M, Stawarz, Ł, Wiita, PJ, Nilsson, K, Jorstad, S, Marscher, AP, Aller, MF, Aller, HD, Lähteenmäki, A, Hovatta, T, Zoła, S, Nalewajko, K, Tornikoski, M, Tammi, J, Hodges, M, Kiehlmann, S, Readhead, ACS, Max-Moerbeck, W, Lindfors, E, Ramazani, VF, Reichart, DE, Caton, DB, Valverde, J, Horan, D, Ojha, R & van Zyl, P 2022, 'Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales', The Astrophysical Journal, vol. 927, no. 2. https://doi.org/10.3847/1538-4357/ac4d95

APA

Goyal, A., Soida, M., Stawarz, Ł., Wiita, P. J., Nilsson, K., Jorstad, S., Marscher, A. P., Aller, M. F., Aller, H. D., Lähteenmäki, A., Hovatta, T., Zoła, S., Nalewajko, K., Tornikoski, M., Tammi, J., Hodges, M., Kiehlmann, S., Readhead, A. C. S., Max-Moerbeck, W., ... van Zyl, P. (2022). Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales. The Astrophysical Journal, 927(2). https://doi.org/10.3847/1538-4357/ac4d95

Vancouver

Goyal A, Soida M, Stawarz Ł, Wiita PJ, Nilsson K, Jorstad S et al. Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales. The Astrophysical Journal. 2022;927(2). https://doi.org/10.3847/1538-4357/ac4d95

Author

Goyal, Arti ; Soida, Marian ; Stawarz, Łukasz ; Wiita, Paul J. ; Nilsson, Kari ; Jorstad, Svetlana ; Marscher, Alan P. ; Aller, Margo F. ; Aller, Hugh D. ; Lähteenmäki, Anne ; Hovatta, Talvikki ; Zoła, Staszek ; Nalewajko, Krzysztof ; Tornikoski, Merja ; Tammi, Joni ; Hodges, Mark ; Kiehlmann, Sebastian ; Readhead, Anthony C. S. ; Max-Moerbeck, Walter ; Lindfors, Elina ; Ramazani, Vandad Fallah ; Reichart, D. E. ; Caton, D. B. ; Valverde, Janeth ; Horan, Deirdre ; Ojha, Roopesh ; van Zyl, Pfesesani. / Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales. In: The Astrophysical Journal. 2022 ; Vol. 927, No. 2.

BibTeX

@article{b785ec3bcf75496baa8855480c0aa5c8,
title = "Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales",
abstract = "We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV γ-ray light curves covering timescales of decades/years to days/minutes for the blazars 3C 279 and PKS 1510−089. The PSDs are modeled as single power laws, and the best-fit spectral shape is derived using the “power spectral response” method. With more than 10 yr of data obtained with weekly/daily sampling intervals, most of the PSDs cover ∼2–4 decades in temporal frequency; moreover, in the optical band, the PSDs cover ∼6 decades for 3C 279 due to the availability of intranight light curves. Our main results are the following: (1) on timescales ranging from decades to days, the synchrotron and the inverse-Compton spectral components, in general, exhibit red-noise (slope ∼2) and flicker-noise (slope ∼1) type variability, respectively; (2) the slopes of γ-ray variability PSDs obtained using a 3 hr integration bin and 3 weeks total duration exhibit a range between ∼1.4 and ∼2.0 (mean slope = 1.60 ± 0.70), consistent within errors with the slope on longer timescales; (3) comparisons of fractional variability indicate more power on timescales ≤100 days at γ-ray frequencies compared to longer wavelengths, in general (except between the γ-ray and optical wavelengths for PKS 1510−089); (4) the normalization of intranight optical PSDs for 3C 279 appears to be a simple extrapolation from longer timescales, indicating a continuous (single) process driving the variability at optical wavelengths; and (5) the emission at optical/infrared wavelengths may involve a combination of disk and jet processes for PKS 1510−089.",
author = "Arti Goyal and Marian Soida and {\L}ukasz Stawarz and Wiita, {Paul J.} and Kari Nilsson and Svetlana Jorstad and Marscher, {Alan P.} and Aller, {Margo F.} and Aller, {Hugh D.} and Anne L{\"a}hteenm{\"a}ki and Talvikki Hovatta and Staszek Zo{\l}a and Krzysztof Nalewajko and Merja Tornikoski and Joni Tammi and Mark Hodges and Sebastian Kiehlmann and Readhead, {Anthony C. S.} and Walter Max-Moerbeck and Elina Lindfors and Ramazani, {Vandad Fallah} and Reichart, {D. E.} and Caton, {D. B.} and Janeth Valverde and Deirdre Horan and Roopesh Ojha and {van Zyl}, Pfesesani",
year = "2022",
doi = "10.3847/1538-4357/ac4d95",
language = "русский",
volume = "927",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

RIS

TY - JOUR

T1 - Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510–089 on Multiple Timescales

AU - Goyal, Arti

AU - Soida, Marian

AU - Stawarz, Łukasz

AU - Wiita, Paul J.

AU - Nilsson, Kari

AU - Jorstad, Svetlana

AU - Marscher, Alan P.

AU - Aller, Margo F.

AU - Aller, Hugh D.

AU - Lähteenmäki, Anne

AU - Hovatta, Talvikki

AU - Zoła, Staszek

AU - Nalewajko, Krzysztof

AU - Tornikoski, Merja

AU - Tammi, Joni

AU - Hodges, Mark

AU - Kiehlmann, Sebastian

AU - Readhead, Anthony C. S.

AU - Max-Moerbeck, Walter

AU - Lindfors, Elina

AU - Ramazani, Vandad Fallah

AU - Reichart, D. E.

AU - Caton, D. B.

AU - Valverde, Janeth

AU - Horan, Deirdre

AU - Ojha, Roopesh

AU - van Zyl, Pfesesani

PY - 2022

Y1 - 2022

N2 - We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV γ-ray light curves covering timescales of decades/years to days/minutes for the blazars 3C 279 and PKS 1510−089. The PSDs are modeled as single power laws, and the best-fit spectral shape is derived using the “power spectral response” method. With more than 10 yr of data obtained with weekly/daily sampling intervals, most of the PSDs cover ∼2–4 decades in temporal frequency; moreover, in the optical band, the PSDs cover ∼6 decades for 3C 279 due to the availability of intranight light curves. Our main results are the following: (1) on timescales ranging from decades to days, the synchrotron and the inverse-Compton spectral components, in general, exhibit red-noise (slope ∼2) and flicker-noise (slope ∼1) type variability, respectively; (2) the slopes of γ-ray variability PSDs obtained using a 3 hr integration bin and 3 weeks total duration exhibit a range between ∼1.4 and ∼2.0 (mean slope = 1.60 ± 0.70), consistent within errors with the slope on longer timescales; (3) comparisons of fractional variability indicate more power on timescales ≤100 days at γ-ray frequencies compared to longer wavelengths, in general (except between the γ-ray and optical wavelengths for PKS 1510−089); (4) the normalization of intranight optical PSDs for 3C 279 appears to be a simple extrapolation from longer timescales, indicating a continuous (single) process driving the variability at optical wavelengths; and (5) the emission at optical/infrared wavelengths may involve a combination of disk and jet processes for PKS 1510−089.

AB - We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV γ-ray light curves covering timescales of decades/years to days/minutes for the blazars 3C 279 and PKS 1510−089. The PSDs are modeled as single power laws, and the best-fit spectral shape is derived using the “power spectral response” method. With more than 10 yr of data obtained with weekly/daily sampling intervals, most of the PSDs cover ∼2–4 decades in temporal frequency; moreover, in the optical band, the PSDs cover ∼6 decades for 3C 279 due to the availability of intranight light curves. Our main results are the following: (1) on timescales ranging from decades to days, the synchrotron and the inverse-Compton spectral components, in general, exhibit red-noise (slope ∼2) and flicker-noise (slope ∼1) type variability, respectively; (2) the slopes of γ-ray variability PSDs obtained using a 3 hr integration bin and 3 weeks total duration exhibit a range between ∼1.4 and ∼2.0 (mean slope = 1.60 ± 0.70), consistent within errors with the slope on longer timescales; (3) comparisons of fractional variability indicate more power on timescales ≤100 days at γ-ray frequencies compared to longer wavelengths, in general (except between the γ-ray and optical wavelengths for PKS 1510−089); (4) the normalization of intranight optical PSDs for 3C 279 appears to be a simple extrapolation from longer timescales, indicating a continuous (single) process driving the variability at optical wavelengths; and (5) the emission at optical/infrared wavelengths may involve a combination of disk and jet processes for PKS 1510−089.

U2 - 10.3847/1538-4357/ac4d95

DO - 10.3847/1538-4357/ac4d95

M3 - статья

VL - 927

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

ER -

ID: 104714773