INTEGRAL Latest News

REMINDER: Abstract submission deadline for INTEGRAL 2022 Conference: 15 September

09 September 2022 This is to remind you that if you wish to present a talk or poster at the INTEGRAL 2022 Conference, you must submit your abstract by Thursday, September 15, 2022.

REMINDER: Early registration for the INTEGRAL Conference closes on SEPTEMBER 1

24 August 2022 The conference is intended to be a face-to-face meeting, re-enabling the long-missed networking possibilities and direct informal exchange on scientific and operational topics, and providing a forum to highlight scientific achievements and shape the future of the scientific landscape enabling multi-messenger and high-energy astronomical research. Further details can be found at:

INTEGRAL Conference 2022: First Announcement and Registration

03 June 2022 We are happy to announce the conference Two Decades of High-Energy Astronomy with INTEGRAL that will take place this autumn at the European Space Operations Centre (ESOC) in Darmstadt during the week of October 17-21. Registration and abstract submission are open.

20th Announcement of Opportunity (AO-20): Preliminary submission statistics

14 April 2022 The deadline for the submission of proposals for AO-20 open time observations was on 1 April 2022, 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 52. The total observing time requested is about 59 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. Assuming up to about 21 Msec of observing time (for new observing proposals) will be available for the AO-20 observing programme (12 months duration), this corresponds to an oversubscription in time by a factor of 2.8. The non-ToO proposals are requesting data rights for 316 sources in total.

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%
Galactic Astronomy 27 44
Extragalactic Astronomy 17 7
Nucleosynthesis and diffuse
continuum/line emission
8 8
Total 52 59

osa 11.2 now available

4 April 2022  A new OSA version has been released by the ISDC. While the software itself contains minor updates, the most significantt changes are related to the IBIS/ISGRI calibration which has now been standardised across the entire mission. This update was possible thanks to the work of Volodymyr Savchenko at ISDC, with support provided by ISOC, IBIS and SPI instrument teams. It provides a substantial improvement to the IBIS/ISGRI energy reconstruction, efficiency, and spectral response. The software and calibration files can be downloaded from the ISDC.


2 March 2022  Today, the ESA Director of Science (Prof. Guenther Hasinger) released the 20th Announcement of Opportunity (AO-20) for observing proposals with INTEGRAL.

This announcement solicits proposals for observations to be carried out from January 2023. 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 1 April 2022, 14:00 CEST.

More information can be found on the AO-20 page.

ISOC AO-19 observations underway and preparations for AO-20

11 January 2022 ISOC wishes you a healthy and successful 2022. The AO-19 cycle of observations started on January 1st and will last 12 months, see the INTEGRAL target lists and sky maps for details as well as the Long-Term Plan.

ISOC is preparing the next call for proposals requesting INTEGRAL observing time. The AO-20 release will be already on 2 March, with a deadline on 1 April 2022. The AO-20 cycle of observations is foreseen to begin on 1 January 2023.

Release of AO-20: call for observing time proposals: 2 March 2022
Deadline for submission of observing time proposals: 1 April 2022 (14:00 CEST)
Meeting of the Time Allocation Committee: 23-25 May 2022
Start of AO-20 cycle of observations: 1 January 2023

15+ years of integral science Review papers available for download

17 December 2021  The complete set of review papers is now available for download free for 50 days.

  • You can download the bundle here

Below are the individual papers and links.

Preface - 15+ years of INTEGRAL

Kuulkers Erik, et al.
INTEGRAL reloaded: Spacecraft, instruments and ground system

Motta S.E., et al.
The INTEGRAL view on black hole X-ray binaries

Turler Marc, et al.
INTEGRAL serendipitous observations of solar and terrestrial X-rays and gamma rays

Krivonos Roman A., et al.
15 years of galactic surveys and hard X-ray background measurements

Diehl Roland, et al.
Steady-state nucleosynthesis throughout the Galaxy

Isern J., et al.
Synthesis of radioactive elements in novae and supernovae and their use as a dignostic tool

Ferrigno Carlo
Multi-messenger astronomy with INTEGRAL

Churazov Eugene, et al.
INTEGRAL results on the electron-positron annihilation radiation and X-ray \& Gamma-ray diffuse emission of the Milky Way

Lutovinov Alexander, et al.
INTEGRAL view on Cataclysmic Variables and Symbiotic Binaries

Kretschmar Peter
Advances in Understanding High-Mass X-ray Binaries with INTEGRAL and Future Directions

Malizia Angela, et al.

Papitto Alessandro, et al.
The INTEGRAL view of the pulsating hard X-ray sky: from accreting and transitional millisecond pulsars to rotation-powered pulsars and magnetars

Postnov Konstantin, et al.
SS433: a massive X-ray binary in an advanced evolutionary stage

Gotz Diego, et al.
INTEGRAL Results on Gamma-Ray Bursts and Polarization of Hard X-ray Sources

Sazonov Sergey, et al.
The Galactic LMXB Population and the Galactic Centre Region


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