DIRECT MEASUREMENT OF THE X-RAY TIME-DELAY TRANSFER FUNCTION IN ACTIVE GALACTIC NUCLEI
The origin of the observed time lags, in nearby active galactic nuclei (AGNs), between hard and soft X-ray photons is investigated using new XMM-Newton data for the narrow-line SeyfertI galaxy Ark 564 and existing data for 1H0707-495 and NGC4051. These AGNs have highly variable X-ray light curves th...
| Main Authors: | , , , , , |
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| 格式: | Journal article |
| 出版: |
2012
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