INTEGRAL Latest News

INTEGRAL TOO observations of another black-hole binary transient: GS 1354-645

2 July 2015 The black-hole X-ray binary transient GS 1354-645 entered an outburst early June. An INTEGRAL ToO observation was triggered to do simultaneous observations with Swift, SALT and ATCA, in the 2nd part of Revolution 1560, on 5 July 2015. The data will become immediately public.

Continued public INTEGRAL Target of Opportunity observations of V404 Cyg (GS2023+338)

23 June 2015 The extreme brightness of the transient in (hard) X-rays (GCNs 17929, 17932, 17935, 17938, 17943, 17944, 17945, 17946, 17948, 17949; ATels #7646, #7647, #7662, #7665, #7693, #7694) makes this a unique event, and INTEGRAL is the only observatory currently capable of doing high-resolution gamma-ray spectroscopy. Therefore, INTEGRAL will continue to observe V404 Cyg as long as the source remains bright. INTEGRAL already performed a public observation from June 17-20 (Revolution 1554; see ATels #7662, #7693; see also the News item below), and is now performing a pre-approved ToO programme from June 20-25 (Revolutions 1555-1556; PI: Rodriguez). The PI has kindly agreed to make the consolidated data publicly available, about a month after the observations have been performed. INTEGRAL observations after June 25 will be made immediately publicly available again, to maximise the scientific returns. The exact observing strategy will depend on the evolution of the transient. Observations of V404 Cyg without interruptions are now planned until revolution 1562 ending on July 11.

ESA Space Science News Release / News in El País

INTEGRAL TOO observations of the black-hole binary X-ray transient V404 Cyg (GS 2023+338)

17 June 2015 Renewed hard X-ray flaring activity from V404 Cyg (GS 2023+338) triggered the Swift/BAT (GCN 17929), Fermi/GBM (GCNs 17932, 17935) and Konus-Wind (GCN 17938), which indicate the start of a new outburst from this source (ATels #7646, #7647). These observations have initiated a public ToO observation starting tonight, in Revolution 1554, from 17-19 June 2015.

Test of low-speed region for INTEGRAL reaction wheels

28 May 2015 On various  occasions in June and July, using dedicated engineering windows, the INTEGRAL MOC will test the satellite behaviour in the low speed region of the on-board reaction wheels, which so far has been avoided. Allowing for lower speeds, might lead to significant fuel savings, but the feasibility and safety of the approach needs to be tested carefully. It might also affect the pointing accuracy and stability. Tests are currently foresee for June 8, 10, 11, 15, 16 and 24, as well as July 7. Data from these tests will be carefully asessed before a regular use of this approach will be considered.

Workshop: The New High-Energy Sky after a Decade of Discoveries

20 May 2015 From 5 to 9 October 2015 a workshop will be held in Rome to present and discuss, via invited and contributed talks (and posters), the main results obtained during the last decade in the field of high-energy astrophysics using INTEGRAL, and place these results in the context of other observatory-like space-based missions, such as Herschel, Plank, Swift, Fermi, AGILE, NuSTAR, MAXI, etc., as well as ground-based observatories. For more details please see the conference website.

INTEGRAL TOO observations of the magnetar SGR 1935+2154

15 April 2015 The Konus-Wind observation of a bright, intermediate burst from SGR 1935+2154 (GCN 17699, 17703) triggered a ToO observation. Revolution 1531, from 17-19 April 2015, will be devoted to the source.

Proceedings 10th INTEGRAL Workshop available

20 March 2015 The Proceedings of the 10th INTEGRAL Workshop "A Synergistic View of the High-Energy Sky", in Annapolis, USA, 15-19 September 2014, has been published on-line in Proceedings of Science.

INTEGRAL AO-13 Call for Observing Proposals is open!

9 March 2015 Today, the Director of Science and Robotic Exploration (Prof. Alvaro Giménez Cañete) has released the 13th Announcement of Opportunity for observing proposals with INTEGRAL.

This announcement solicits proposals for observations to be carried out from January 2016 for a period of 12 months. Proposers from all over the world are welcome to participate. All proposals will be subject to an independent peer review by the INTEGRAL Time Allocation Committee (TAC). The deadline for proposal submission is Friday 17 April 2015, 14:00 CEST.

We would like to draw your attention to the following points:

  • Following a recommendation by the IUG it is possible to submit Key Programme proposals with observations spanning two AO cycles of observation.
  • To ensure a safe disposal in 2029, a series of dedicated manoeuvres modifying the orbit of INTEGRAL were executed in January and February, this year. The new orbit has a nominal duration of about 64 hours, compared to the old one, which lasted around 72 hours. Consequently, the available observing time per revolution is now approximately 170 ks, compared to 210 ks before the orbit change was implemented.
  • Observations with non-standard, custom patterns, such as the GPS and Galactic scans, generally reduce scheduling efficiency, and increase workload for both the ISOC and the Mission Operations Centre. Because of the overall reduced manpower in INTEGRAL operations, the use of non-standard patterns is now strongly discouraged. Hence, starting in AO-13, custom patterns will be considered only for the highest, A-grade, proposals, and their scheduling will be done on a best effort basis.
  • ESA continues to provide the opportunity to propose for coordinated observations with XMM-Newton and/or NASA's Swift satellite. A total of 300 ks of XMM-Newton observing time and a total of 150 ks of Swift observing time is available for these coordinated observations.
  • Finally, we would like to remind you that there is no second call for proposals requesting data rights anymore (so-called data rights proposals). Therefore, we strongly encourage you to submit any data rights proposals as observing time proposals in the coming and future announcements of opportunity; amalgamation has been made more flexible.

More information can be found on the AO-13 page.

INTEGRAL TOO observations of SAX J1748.8-2021 in NGC 6440

20 January 2015 After the INTEGRAL detection of renewed activity at hard X-rays from a transient within the Globular Cluster NGC 6440 (ATel #7098), the source was identified with Swift/XRT to be most probably the accreting millisecond X-ray pulsar SAX J1748.8-2021 (ATel #7106). In response to a ToO request raised from the community, the Project Scientist has approved a public ToO observation of 100 ks which will begin at the start of revolution 1511 on 23 Feb 2015 at 12:20:46.


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