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The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The Swift view

Nan Ding, Qiusheng Gu, Yunyong Tang, Dingrong Xiong, Xiaotong Guo, Xinpeng Xu, Xiongfei Geng, Xue Ge and Yongyun Chen

A&A, 659 (2022) A172

Published online: 23 March 2022

DOI: 10.1051/0004-6361/202142650

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Astronomy & Astrophysics (A&A)

Editor-in-Chief: T. Forveille
Letters Editor-in-Chief: J. Alves
Managing Editor: D. Elbaz

ISSN: 0004-6361 ; e-ISSN: 1432-0746
Frequency: 12 volumes per year
Published by: EDP Sciences

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