INTEGRAL - The International Gamma-ray Astrophysics Laboratory - INTEGRAL
INTEGRAL Latest News
Target-of-Opportunity observations of IceCube 190730A
1 August 2019 INTEGRAL is observing in revolution 2120 the field around the candidate high-energy neutrino event IceCube 190730A (GCN 25225), for which a weakly-associated counterpart candidate was detected by SPI-ACS (GCN 25232). The ongoing observations, coordinated with XMM-Newton, will search for active sources in the field, to potentially identify the production site of the neutrino event.
Target-of-Opportunity observations of CenTAURUS X-3
31 July 2019 INTEGRAL is currently observing the High Mass X-ray Binary Cen X-3. The source is the target selected for the first light of the ART-XC detector onboard the Spektr-RG mission. INTEGRAL observations will provide complementary information of the source at hard X-rays and will help to characterise the performance of the ART-XC detector in space. Spektr-RG was launched from the Baikonur Cosmodrome on 13 July 2019. We wish sucessful operations to our Spektr-RG colleagues.
INTEGRAL AO-17 General Programme Approved
12 July 2019 The INTEGRAL AO-17 General Programme, as recommended by the Time Allocation Committee (TAC) and approved by ESA's Director of Science (Prof. Günther Hasinger), has been released and the observers have been informed. It can be found here
With the help of INTEGRAL, one got to the bottom of a 'spitting' black hole
29 April 2019 Data by INTEGRAL, obtained in 2015 during the outburst of the X-ray transient black-hole binary V404 Cyg, have helped to shed light on the workings of inner parts of the binary. As presented in a Letter to Nature, in the radio, astronomers have recently found that the black hole was spitting out 'bullets' of plasma while rotating through space. The inner part of the accretion disc seems to be tilted with respect to the rest of the system, most likely due to the spin of the black hole being inclined with respect to the orbit of the companion star. INTEGRAL's observations were used to estimate the energy and geometry of the accretion onto the black hole, which in turn were crucial to understand the link between the incoming and outflowing material to create a complete picture of the situation. See the ESA press release for more information.
17th Announcement of Opportunity (AO-17): Preliminary statistics
23 April 2019 The deadline for the submission of proposals for AO-17 open time observations was on 5 April 2019, and all proposals are in the ISOC database. Below are some preliminary statistics on the proposals that have been received.
Total number of proposals
The total number of proposals received is 63. The total observing time requested is about 73 Msec (for all types of observation, i.e., fixed time, normal time, and ToO). Here, 10% of the requested total ToO time has been taken into account. Given that up to about 21 Msec of observing time (for new observing proposals) will be available for the AO-17 observing programme (12 months duration starting on 1 January 2020), this corresponds to an oversubscription in time by a factor of 3.5.
The non-ToO proposals are requesting data rights for 361 sources in total. 22 proposals requested joint time with NuSTAR, Swift and/or XMM-Newton.
Proposals per category
In the following table we give the breakdown of number of proposals as a function of the proposal category. Note that the numbers on requested observing times do include ToO proposals, but it has been assumed here, that a typical ToO proposal requests about 10% of its total observing time as entered into PGT from all the candidate sources included in a ToO proposal.
|Scientific Category||Number of proposals||Requested observing time (Ms) |
includes ToO times x 10%
|Nucleosynthesis and diffuse |
Mid May, the Time Allocation Committee will peer review all proposals and recommend the AO-17 observing programme to ESA.
INTEGRAL, A Human Development
08 March 2019 At the occasion of the 12th INTEGRAL conference, Thierry Courvoisier provided an inspiring after-dinner speech on 12 February 2019, entitled: INTEGRAL, A Human Development.
INTEGRAL AO-17 CALL FOR OBSERVING PROPOSALS IS OPEN!
25 February 2019 Today, the Director of Science (Prof. Guenther Hasinger) has released the 17th Announcement of Opportunity (AO-17) for observing proposals with INTEGRAL.
This announcement solicits proposals for observations to be carried out from January 2020 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 5 April 2019, 14:00 CEST.
Target-of-Opportunity observations of MAXI J1348-630
6 February 2019 INTEGRAL is currently observing the candidate black hole X-ray binary MAXI J1348-630. The ongoing outburst, first detected by MAXI on Jan 26th, is being monitoring by INTEGRAL since Revolution 2051 (see ATels #12441, 12457, 12471 and GCN Circ. #23799). Data are provided by two accepted monitoring programs (1640006, PI: Rodríguez; 1640004 PI: Belloni). The data from proposal 1640006 are public.
Preparations for the next announcement of opportunity (AO-17) for requesting observing time with INTEGRAL is underway
25 January 2019 ISOC is preparing the next call for proposals requesting INTEGRAL observing time. The AO-17 release will be already on 25 February, with a deadline on 5 April 2019. The AO-17 cycle of observations is foreseen to begin on 1 January 2020 and has the usual duration of 12 months.
|Release of AO-17: Call for observing time proposals||25 February 2019|
|Deadline for submission of observing time proposals||5 April 2019 (14:00 CEST)|
|Meeting of the Time Allocation Committee (TAC)||13-15 May 2019|
|Start AO-17 cycle of observation (duration 12 months)||1 January 2020|
Team of telescopes finds X-ray engine inside mysterious supernova
10 January 2019 INTEGRAL and XMM-Newton have helped to find a source of powerful X-rays at the centre of an unprecedentedly bright and rapidly evolving stellar explosion that suddenly appeared in the sky earlier this year. See the News item for more information.
12th INTEGRAL Conference and 1st AHEAD Gamma-ray workshop: abstract deadline extension to 5 December
28 November 2018 The abstract submission deadline for the 12th INTEGRAL Conference and 1st AHEAD Gamma-ray workshop is postponed to 5 December 2018. We invite all interested to register to the conference as soon as possible to permit an optimal organization. We hope to welcome many of you in Geneva next February.
ESA's Space Science image of the week: INTEGRAL X-rays Earth's aurora
19 November 2018 From Space in images. On 10 November 2015 was set for measuring the cosmic X-ray background using the Earth to occult the X-ray and gamma-ray sky. On that day, however, a phenomenon on Earth disturbed the observations: intense auroras dancing around the North Pole. See also ESA's news item from 2016.
INTEGRAL science operations confirmed until 31 December 2020 and indicatively extended until 31 December 2022
14 November 2018 During their recent meeting, the Science Programme Committee (SPC) approved the confirmation of science operations until 31 December 2020, as well the indicative extension of science operations for INTEGRAL until 31 December 2022, subject to a mid-term review in 2020. INTEGRAL is proven to be of great value to pursue investigations that were not foreseen at the time of its launch; this is exemplified by the role of INTEGRAL in the prompt observation and follow-up of gravitational wave detections, paving the way for the future of multi-messenger astronomy. See the full story on the SPC decision. This is excellent news for INTEGRAL and the science community. We thank you for your continuing support.
OSA 11.0 release
19 October 2018 We are very happy to share the news that today, the INTEGRAL Science Data Centre (ISDC), the INTEGRAL instrument teams, and the INTEGRAL Science Operations Centre (ISOC), have announced the release of the Offline Software Analysis version 11.0. Major improvements were made. These include the following:
- Completely new energy calibration.
- Time-dependent response files that include the redistribution and effective area.
- The instability of count rate within one revolution due to the detector polarization has been corrected.
- Time-dependent background and efficiency calibration.
- Spectra can be binned using PIL input parameters without the need for a rebinned matrix.
It is important to note that OSA 11.0 for IBIS is currently limited to data starting from 2015-12-26 (start of revolution 1626). For earlier data, the user should use OSA 10.2 with the limitations described in the user manual.
- New version of j_ima_iros with several improvements.
- Automatic search for bursts.
- Light curves now extracted with j_ima_iros.
- The use of PSD discriminator events for different energy ranges.
- Spectral extraction extended to above 400 or 600 keV (see details in user manual).
- Updated flat fields.
For any question you may have, we invite you to contact the INTEGRAL Helpdesk.
We wish you success in your analyis of INTEGRAL data.