A two-year monitoring campaign of Supergiant Fast X-ray Transients with Swift

P. Romano, V. La Parola, G. Cusumano, S. Vercellone, P. Esposito, Jamie A. Kennea, David Nelson Burrows, H. A. Krimm, C. Pagani, N. Gehrels

Research output: Contribution to journalConference articlepeer-review


Swift is the only observatory which, due to its unique fast-slewing capability and broad-band energy coverage, can detect outbursts from Supergiant Fast X-ray Transients (SFXTs) from the very beginning and study their evolution panchromatically. Thanks to its flexible observing scheduling, which makes monitoring cost-effective, Swift has also performed a campaign that covers all phases of the lives of SFXTs with a high sensitivity in the soft X-ray regime, where most SFXTs had not been observed before. Our continued effort at monitorning SFXTs with 2-3 observations per week (1-2 ks) with the Swift X-Ray Telescope (XRT) over their entire visibility period has just finished its second year. We report on our findings on the long-term properties of SFXTs, their duty cycle, and the new outbursts caught by Swift during the second year.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - Dec 1 2010
Event8th INTEGRAL Workshop on the Restless Gamma-Ray Universe, INTEGRAL 2010 - Dublin Castle, Dublin, Ireland
Duration: Sep 27 2010Sep 30 2010

All Science Journal Classification (ASJC) codes

  • General


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