A dataset provided by the European Space Agency

Name: INTEGRAL monitoring of NGC 4945
Published: 2026-03-05T13:05:58Z

Proposal ID	1020019
Obs ID	10200190001, 10200190002, 10200190003
Title	INTEGRAL monitoring of NGC 4945
Download Data Associated to the proposal	https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:1020019
DOI	https://doi.org/10.57780/esa-ze2j4xp
Author	Malizia
Abstract	We propose in the present INTEGRAL AO-10 to monitor the Compton-thick AGN NGC 4945 for a total of 1 Msec. We will coordinate a snapshot of this monitoring with the incoming NuSTAR hard X-ray satellite for a simultaneous observation with INTEGRAL having the double goal of calibrating the two instruments while studying the spectral shape and variabity of NGC 4945. This campaign is unique in two respects: NGC 4945 is the only object suitable for an investigation of possible variations of a Compton-thick AGN, which would confirm the first constraints on the structure and dimensions of the absorber/reflector in these objects, and the proposed observations are a clear ideal case for combined NuSTAR/INTEGRAL obser- vations in order to cross-calibrate the two instruments and, making full use of their unique high-energy spectral capabilities, study the broad band spectrum of this archetypal Compton thick AGN. We propose to split this observational campaign in a sequence of 8 pointings of 100 ksec each before and after a 200 ksec measurement contemporaneous with NuSTAR.
Publications	Background modelling for I3-ray spectroscopy with INTEGRAL/SPI - Siegert, Thomas, Diehl, Roland,Weinberger, Christoph,Pleintinger, Moritz M. M.,Greiner, Jochen,Zhang, Xiaoling (2019-06-01) http://ui.adsabs.harvard.edu/#abs/2019A&A...626A..73S Centaurus A: Exploring the Nature of the Hard X-Ray/Soft Gamma-Ray Emission with INTEGRAL - Rodi, James, Jourdain, E.,Molina, M.,Roques, J. P. (2023-11-01) http://ui.adsabs.harvard.edu/#abs/2023ApJ...957...51R Coincidence of a high-fluence blazar outburst with a PeV-energy neutrino event - Kadler, M., Krauss, F.,Mannheim, K.,Ojha, R.,Muller, C.,Schulz, R.,Anton, G.,Baumgartner, W.,Beuchert, T.,Buson, S.,Carpenter, B.,Eberl, T.,Edwards, P. G.,Eisenacher Glawion, D.,Elsasser, D.,Gehrels, N.,Grafe, C.,Gulyaev, S.,Hase, H.,Horiuchi, S.,James, C. W.,Kappes, A.,Kappes, A.,Katz, U.,Kreikenbohm, A.,Kreter, M.,Kreykenbohm, I.,Langejahn, M.,Leiter, K.,Litzinger, E.,Longo, F.,Lovell, J. E. J.,McEnery, J.,Natusch, T.,Phillips, C.,Plotz, C.,Quick, J.,Ros, E.,Stecker, F. W.,Steinbring, T.,Stevens, J.,Thompson, D. J.,Trustedt, J.,Tzioumis, A. K.,Weston, S.,Wilms, J.,Zensus, J. A. (2016-08-01) http://ui.adsabs.harvard.edu/#abs/2016NatPh..12..807K Comparing simulated ²⁶Al maps to gamma-ray measurements - Pleintinger, Moritz M. M., Siegert, Thomas,Diehl, Roland,Fujimoto, Yusuke,Greiner, Jochen,Krause, Martin G. H.,Krumholz, Mark R. (2019-12-01) http://ui.adsabs.harvard.edu/#abs/2019A&A...632A..73P Diffuse Galactic emission spectrum between 0.5 and 8.0 MeV - Siegert, Thomas, Berteaud, Joanna,Calore, Francesca,Serpico, Pasquale D.,Weinberger, Christoph (2022-04-01) http://ui.adsabs.harvard.edu/#abs/2022A&A...660A.130S Discovery of blue companions to two southern Cepheids: WW Car and FN Vel - Kovtyukh, V., Szabados, L.,Chekhonadskikh, F.,Lemasle, B.,Belik, S. (2015-04-01) http://ui.adsabs.harvard.edu/#abs/2015MNRAS.448.3567K Dose Measured On-Board INTEGRAL After More Than 12 Years in Space - Claret, Arnaud, Laurent, Philippe,Sauvageon, Aymeric,Savchenko, Volodymyr (2015-12-01) http://ui.adsabs.harvard.edu/#abs/2015ITNS...62.2784C Ephemeris, orbital decay, and masses of ten eclipsing high-mass X-ray binaries - Falanga, M., Bozzo, E.,Lutovinov, A.,Bonnet-Bidaud, J. M.,Fetisova, Y.,Puls, J. (2015-05-01) http://ui.adsabs.harvard.edu/#abs/2015A&A...577A.130F Extreme relativistic electron fluxes in the Earths outer radiation belt: Analysis of INTEGRAL IREM data - Meredith, Nigel P., Horne, Richard B.,Sandberg, Ingmar,Papadimitriou, Constantinos,Evans, Hugh D. R. (2017-07-01) http://ui.adsabs.harvard.edu/#abs/2017SpWea..15..917M Galactic survey of ⁴⁴Ti sources with the IBIS telescope onboard INTEGRAL - Tsygankov, Sergey S., Krivonos, Roman A.,Lutovinov, Alexander A.,Revnivtsev, Mikhail G.,Churazov, Eugene M.,Sunyaev, Rashid A.,Grebenev, Sergey A. (2016-06-01) http://ui.adsabs.harvard.edu/#abs/2016MNRAS.458.3411T Gamma-Ray Emission of ⁶⁰Fe and ²⁶Al Radioactivity in Our Galaxy - Wang, W., Siegert, T.,Dai, Z. G.,Diehl, R.,Greiner, J.,Heger, A.,Krause, M.,Lang, M.,Pleintinger, M. M. M.,Zhang, X. L. (2020-02-01) http://ui.adsabs.harvard.edu/#abs/2020ApJ...889..169W INTEGRAL 11-year hard X-ray survey above 100 keV - Krivonos, R., Tsygankov, S.,Lutovinov, A.,Revnivtsev, M.,Churazov, E.,Sunyaev, R. (2015-04-01) http://ui.adsabs.harvard.edu/#abs/2015MNRAS.448.3766K INTEGRAL/SPI {$gamma$}-ray line spectroscopy. Response and background characteristics - Diehl, Roland, Siegert, Thomas,Greiner, Jochen,Krause, Martin,Kretschmer, Karsten,Lang, Michael,Pleintinger, Moritz,Strong, Andrew W.,Weinberger, Christoph,Zhang, Xiaoling (2018-03-01) http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..12D Investigating the true nature of three hard X-ray sources - Molina, M., Malizia, A.,Masetti, N.,Bassani, L.,Bazzano, A.,Bird, A. J.,Fiocchi, M.,Palazzi, E.,Ubertini, P. (2021-11-01) http://ui.adsabs.harvard.edu/#abs/2021MNRAS.507.3423M New hard X-ray sources discovered in the ongoing INTEGRAL Galactic plane survey after 14 yr of observations - Krivonos, Roman A., Tsygankov, Sergey S.,Mereminskiy, Ilya A.,Lutovinov, Alexander A.,Sazonov, Sergey Yu.,Sunyaev, Rashid A. (2017-09-01) http://ui.adsabs.harvard.edu/#abs/2017MNRAS.470..512K Primordial black hole dark matter in the context of extra dimensions - Friedlander, Avi, Mack, Katherine J.,Schon, Sarah,Song, Ningqiang,Vincent, Aaron C. (2022-05-01) http://ui.adsabs.harvard.edu/#abs/2022PhRvD.105j3508F RT Crucis: a look into the X-ray emission of a peculiar symbiotic star - Ducci, L., Doroshenko, V.,Suleimanov, V.,Nikolajuk, M.,Santangelo, A.,Ferrigno, C. (2016-07-01) http://ui.adsabs.harvard.edu/#abs/2016A&A...592A..58D ²⁶Al gamma rays from the Galaxy with INTEGRAL/SPI - Pleintinger, Moritz M. M., Diehl, Roland,Siegert, Thomas,Greiner, Jochen,Krause, Martin G. H. (2023-04-01) http://ui.adsabs.harvard.edu/#abs/2023A&A...672A..53P The Galactic Bulge Diffuse Emission in Broadband X-Rays with NuSTAR - Perez, Kerstin, Krivonos, Roman,Wik, Daniel R. (2019-10-01) http://ui.adsabs.harvard.edu/#abs/2019ApJ...884..153P The Hard X-Ray Continuum of Cen A Observed With INTEGRAL SPI - Burke, Mark J., Jourdain, Elisabeth,Roques, Jean-Pierre,Evans, Daniel A. (2014-05-01) http://ui.adsabs.harvard.edu/#abs/2014ApJ...787...50B The INTEGRAL/IBIS AGN catalogue: an update - Malizia, A., Landi, R.,Molina, M.,Bassani, L.,Bazzano, A.,Bird, A. J.,Ubertini, P. (2016-07-01) http://ui.adsabs.harvard.edu/#abs/2016MNRAS.460...19M Type I X-ray Bursts Detected by the JEM-X Telescope Onboard the INTEGRAL Observatory in 2003-2015 - Chelovekov, I. V., Grebenev, S. A.,Mereminskiy, I. A.,Prosvetov, A. V. (2017-12-01) http://ui.adsabs.harvard.edu/#abs/2017AstL...43..781C VerticaVertical position of the Sun with gamma-rays - Siegert, Thomas, (2019-12-01) http://ui.adsabs.harvard.edu/#abs/2019A&A...632L...1S Water megamaser emission in hard X-ray selected AGN - Panessa, F., Castangia, P.,Malizia, A.,Bassani, L.,Tarchi, A.,Bazzano, A.,Ubertini, P. (2020-09-01) http://ui.adsabs.harvard.edu/#abs/2020A&A...641A.162P X-ray absorption in INTEGRAL active galactic nuclei. Host galaxy inclination - Malizia, A., Bassani, L.,Stephen, J. B.,Bazzano, A.,Ubertini, P. (2020-07-01) http://ui.adsabs.harvard.edu/#abs/2020A&A...639A...5M
Temporal Coverage	2013-07-02T22:18:22Z / 2013-07-10T08:23:35Z
Version	1.0
Mission Description	The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
Creator Contact	https://www.cosmos.esa.int/web/integral/helpdesk
Date Published	2026-03-05T13:05:58Z
Keywords	INTEGRAL gamma-ray data, ESA INTEGRAL mission dataset, gamma-ray astronomy observations, high-energy astrophysics data, IBIS imaging data, SPI spectrometer data, JEM-X X-ray monitoring data, OMC optical monitoring data, coded mask telescope observations, gamma-ray spectroscopy dataset, MeV astrophysics data, keV–MeV photon observations, gamma-ray burst observations dataset, black hole gamma-ray data, neutron star high-energy observations, positron annihilation 511 keV line data, Galactic Center gamma-ray emission dataset, supernova nucleosynthesis gamma-ray lines, active galactic nuclei high-energy data, transient astrophysical source monitoring, calibrated photon event lists, gamma-ray light curves, high-energy spectra data, sky maps gamma-ray, time-series astrophysical observations, long-term gamma-ray monitoring dataset
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Malizia, 2026, 'INTEGRAL monitoring of NGC 4945', 1.0, European Space Agency, https://doi.org/10.57780/esa-ze2j4xp