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INTEGRAL U.S. Guest Observer Facility

The INTErnational Gamma-Ray Astrophysics Laboratory

INTEGRAL, was launched in October 2002 aboard a Russian Proton rocket,  and is providing a new insight into the most violent and exotic objects of the Universe,  such as neutron stars, active galactic nuclei and supernovae. INTEGRAL is also helping us to understand processes such as the formation of new chemical elements and the mysterious gamma-ray bursts, the most energetic phenomena in the Universe. Environments of extreme temperature and density, near the event-horizons of black holes, are a major topic of study with INTEGRAL.

These studies are possible thanks to INTEGRAL's combination of fine spectroscopy and imaging of gamma-ray emissions in the energy range of 15 keV to 10 MeV (using the SPI and IBIS instruments) and concurrent monitoring in the X-ray band (4-35 keV) using JEM-X, and in the optical (500-600 nm) band, using the OMC.

A project of the European Space Agency INTEGRAL, serves an international Guest Observer community. Participation by U.S. astronomers was supported by a Guest Observer Facility (GOF) at the NASA/Goddard Space Flight Center (GSFC) from the mission start until October 2010. Since then, the mirroring of the European INTEGRAL Public Data Archive into the HEASARC has been continued by the HEASARC.

Picture of the Month

Integral Picture of the Month

INTEGRAL News & Science Results

A gamma-ray burst from a magnetar in a nearby galaxy
(January 15, 2021)

INTEGRAL helps unravel origin of fast radio bursts
(July 28, 2020)

ESA missions team up to map cosmic rays across the solar system
(November 19, 2019)

Scientists get to the bottom of a 'spitting' black hole
(April 29, 2019)

Integral in orbit

Latest INTEGRAL News

  • INTEGRAL AO-21 Call for Observing Proposals is Open (05 Sep 2023)
    This announcement solicits proposals for observations to be carried out from January 1, 2024 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 September 29, 2023, 14:00 CEST.
  • INTEGRAL Operations Extended (08 Mar 2023)
    ESA's Science Programme Committee (SPC) has confirmed the continued operations of INTEGRAL until 31 Dec 2024, enabling support of the 4th campaign of joint observations of gravitational waves by LIGO, Virgo, and KAGRA. This will be followed by two years of post-operations and monitoring of the spacecraft until re-entry in February 2029.
  • INTEGRAL AO-20 General Program Approved (15 Dec 2022)
    The INTEGRAL AO-20 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.
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    INTEGRAL Picture of the Month archive
    Latest INTEGRAL Newsletter
    Latest ISDC Newsletter
    INTEGRAL News & Science Results
    INTEGRAL Publications (ESA list)

    INTEGRAL Public Data Archive Status
  • The HEASARC mirror to the INTEGRAL Public Data Archive now contains data through the September 10, 2023 public data release (Rev 2539) plus all data where the PI has allowed the data to be made public earlier than the 1 year proprietary period.

  • The next scheduled public data release is September 25, 2023.

    ISDC Public Data Release Schedule.

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