Bazzano, A.

Bird, A. J.

Chenevez, J.

Drave, S. P.

Fiocchi, M.

Kuulkers, E.

Natalucci, L.

Sguera, V.

Tarana, A.

Enhanced hard X-ray emission has been detected from the high mass X-ray binary systems IGR J19294+1816 and 4U 1909+07 during recent INTEGRAL observations of the Cygnus region of the Galactic Plane performed in revolution 1294 between 2013-05-19 UTC 01:32:52 and 10:55:38. Neither source was detected at a significant level during observations in the previous revolution (1293) performed between 2013-05-18 UTC 03:55:28 and 15:59:42.IGR J19294+1816 was detected at an IBIS/ISGRI count rate of 3.1±0.4 counts s-1 in the 18-60 keV band, corresponding to a significance of 7.2 sigma and a flux of ~17 mCrab, for an exposure of 19.7 ks. 4U 1909+07 was detected at a count rate of 3.7±0.5 counts s-1 in the same band, corresponding to a significance of 7.0 sigma and a flux of ~ 20 mCrab (with an exposure of 13.5 ks). Both sources were also in the field of view of the soft X-ray JEM-X instrument for total effective exposures of ~7.9 and ~2.9 ks respectively but neither were detected, with 6sigma flux upper limits of 6 mCrab and 8 mCrab in the 3-10 keV band respectively.4U 1909+07 is a wind-fed SgXRB pulsar whose past variability is consistent with the enhanced flux detected in these observations. IGR J19294+1816 is a likely BeXRB pulsar that displays recurrent outbursts, of an approximate duration of 2 months (Bozzo et al. 2011, A&amp;A, 531, A65), modulated on the 117.2 day orbital period (Corbet and Krimm 2009, ATel #2008) along with additional fast flaring behaviour, more typical of Supergiant Fast X-ray Transients (~2000-3000s, see Rodriguez et al. 2009, A&amp;A, 508, 889). The date of this new detection is consistent with the time of peak activity predicted by Corbet and Krimm 2009 (ATel #2008) suggesting that these observations are detecting the onset of a new outburst of the system rather than an isolated fast flare. We encourage multi-wavelength observations of IGR J19294+1816 to follow the evolution of the outburst from this early stage. INTEGRAL will be performing regular hard X-ray monitoring of the Galactic Plane over the coming months with the next observation of this region scheduled to begin on 2013-05-26.A full description of the INTEGRAL Galactic Plane Scanning programme, along with links to light curves and sky maps can be found in ATel #3361. Please note, for consistency with the GPS archive the IBIS/ISGRI analysis presented here was performed with version 9 of the INTEGRAL Offline Science Analysis (OSA) software. However the results are also seen to be consistent with the current OSA release (v.10).The authors wish to thank the ISOC observation planning team for their assistance in the design and implementation of the GPS pointing strategy

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P.; Sguera, V.; Fiocchi, M.; Bazzano, A.; Bird, A. J.; Kuulkers, E.; Natalucci, L.; Tarana, A.;Chenevez, JérômePublished in:The Astronomer´s Telegram : ATelPublication date:2013Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Drave, S. P., Sguera, V., Fiocchi, M., Bazzano, A., Bird, A. J., Kuulkers, E., ... Chenevez, J. (2013). INTEGRALGalactic Plane Scans detect enhanced activity from the HMXBs IGR J19294+1816 and 4U 1909+07. TheAstronomer´s Telegram : ATel, [ATel #5079].OutsideGCNIAUCsOtherMacOS: Dashboard WidgetFollow ATel on TwitterATELstreamATel Community SitePost a New Telegram | Search | InformationTelegram IndexObtain Credential To Post | RSS Feeds | Email SettingsPresent Time: 1 Jul 2013; 14:08 UTThis space for free for yourconference.[ Previous | Next | ADS  ]INTEGRAL Galactic Plane Scans detect enhancedactivity from the HMXBs IGR J19294+1816 and 4U1909+07ATel #5079; S. P. Drave (Univ. of Southampton, UK), V. Sguera (INAF/IASF Bologna, Italy), M.Fiocchi, A. Bazzano (INAF/IASF Roma, Italy), A. J. Bird (Univ. of Southampton, UK), E.Kuulkers (ESA/ESAC, Spain), L. Natalucci, A. Tarana (INAF/IASF Roma, Italy) and J.Chenevez (National Space Institute DTU, Denmark) on behalf of the INTEGRAL/GPS teamon 21 May 2013; 10:46 UTCredential Certification: Sebastian Drave (sd805@soton.ac.uk)Subjects: X-ray, Binary, TransientReferred to by ATel #: 5104, 5119Enhanced hard X-ray emission has been detected from the high mass X-ray binary systems IGRJ19294+1816 and 4U 1909+07 during recent INTEGRAL observations of the Cygnus region of theGalactic Plane performed in revolution 1294 between 2013-05-19 UTC 01:32:52 and 10:55:38.Neither source was detected at a significant level during observations in the previous revolution(1293) performed between 2013-05-18 UTC 03:55:28 and 15:59:42.IGR J19294+1816 was detected at an IBIS/ISGRI count rate of 3.1±0.4 counts s-1 in the 18-60 keVband, corresponding to a significance of 7.2 sigma and a flux of ~17 mCrab, for an exposure of 19.7ks. 4U 1909+07 was detected at a count rate of 3.7±0.5 counts s-1 in the same band, correspondingto a significance of 7.0 sigma and a flux of ~ 20 mCrab (with an exposure of 13.5 ks). Both sourceswere also in the field of view of the soft X-ray JEM-X instrument for total effective exposures of~7.9 and ~2.9 ks respectively but neither were detected, with 6sigma flux upper limits of 6 mCraband 8 mCrab in the 3-10 keV band respectively.4U 1909+07 is a wind-fed SgXRB pulsar whose past variability is consistent with the enhanced fluxdetected in these observations. IGR J19294+1816 is a likely BeXRB pulsar that displays recurrentoutbursts, of an approximate duration of 2 months (Bozzo et al. 2011, A&A, 531, A65), modulatedon the 117.2 day orbital period (Corbet and Krimm 2009, ATel #2008) along with additional fastflaring behaviour, more typical of Supergiant Fast X-ray Transients (~2000-3000s, see Rodriguez etal. 2009, A&A, 508, 889). The date of this new detection is consistent with the time of peak activitypredicted by Corbet and Krimm 2009 (ATel #2008) suggesting that these observations are detectingthe onset of a new outburst of the system rather than an isolated fast flare. We encourage multi-wavelength observations of IGR J19294+1816 to follow the evolution of the outburst from thisearly stage. INTEGRAL will be performing regular hard X-ray monitoring of the Galactic Planeover the coming months with the next observation of this region scheduled to begin on 2013-05-26.A full description of the INTEGRAL Galactic Plane Scanning programme, along with links to lightcurves and sky maps can be found in ATel #3361. Please note, for consistency with the GPS archivethe IBIS/ISGRI analysis presented here was performed with version 9 of the INTEGRAL OfflineScience Analysis (OSA) software. However the results are also seen to be consistent with thecurrent OSA release (v.10).The authors wish to thank the ISOC observation planning team for their assistance in the design andimplementation of the GPS pointing strategy.Related5131 Confirmation of thesuperorbital modulation of thehigh mass X-ray binaries 4U1909+07, IGR J16479-4514 andIGR J16418-4532 withINTEGRAL/IBIS5126 Superorbital Modulation in theWind-Accretion HMXBs IGRJ16418-4532 and IGRJ16479-45145119 Superorbital Periodicity in theWind-Accretion HMXB 4U1909+07 (= X 1908+075)5104 Swift/XRT follow-up of theperiodic activity of thetransient pulsar IGRJ19294+18165079 INTEGRAL Galactic PlaneScans detect enhancedactivity from the HMXBs IGRJ19294+1816 and 4U 1909+074136 Swift follow-up of the renewedactivity of IGR J19294+18164135 INTEGRAL detects renewedactivity from IGR J19294+18163917 Outburst of IGR J19294+1816Detected with Fermi/GBM3361 Announcement of INTEGRALGalactic Plane monitoringprogram and detection of 2new hard X-ray sources.2985 Fermi GBM Detects Pulsationsfrom IGR J19294+18162983 INTEGRAL detects renewedactivity from IGR J19294+18162766 Discovery of the Pulse Periodof IGR J16493-4348 from RXTEPCA Observations2599 A 6.8 Day Period in IGRJ16493-4348 from Swift/BATand RXTE/PCA Observations2008 A 117-day Period in IGRJ19294+18162002 IGR J19294+1816 is an X-rayPulsar1999 Swift/BAT detection of IGRJ19294+18161998 Swift archival observations ofthe field around the newINTEGRAL source IGRJ19294+18161997 INTEGRAL discovers the newhard X-ray source IGRJ19294+1816779 Swift/BAT and RXTE/ASMDiscovery of the Orbital Periodof IGR J16418-4532457 IGR J16493-4348 - aradiopulsar or a new X-raybinaryTweet 2   [ Telegram Index ]R. E. Rutledge, Editor-in-ChiefRecommend 0ATel #5079: INTEGRAL Galactic Plane Scans detect enhanced activity... http://www.astronomerstelegram.org/?read=50791 of 2 01-07-2013 16:09

INTEGRAL Galactic Plane Scans detect enhanced activity from the HMXBs IGR J19294+1816 and 4U 1909+07

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INTEGRAL Galactic Plane Scans detect enhanced activity from the HMXBs IGR J19294+1816 and 4U 1909+07

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