A dataset provided by the European Space Agency

Name: Following the evolution of the X-ray emitting structure with luminosity in transient accreting pulsars.
Published: 2025-03-25T09:54:37Z

Proposal ID	0940023
Obs ID	09400230006, 09400230007, 09400230008, 09400230009, 09400230010, 09400230011, 09400230012, 09400230013
Title	Following the evolution of the X-ray emitting structure with luminosity in transient accreting pulsars.
Download Data Associated to the proposal	https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0940023
DOI	https://doi.org/10.57780/esa-aocium5
Author	Klochkov
Abstract	We propose a Target of Opportunity Observation whenever one of the transient accreting pulsars from the provided list of sources enters an outburst. The main scientific goal of the proposal is to identify and study different accretion regimes that might be at work in the observed source depending on the luminosity level - a new very promising approach to understand the physics inside the emitting accretion column/mound on the neutron star. Different accretion regimes lead to different luminosity-dependencies of the broad-band spectral continuum and the cyclotron feature. We demonstrate that the observed slopes of the dependencies at different luminosities can quantitatively be compared with theoretical predictions. We will also search for transitions from one accretion regime to another that so far have not been seen in any source, but, if observed, would provide an ultimate test for the theory of the X-ray emitting structure on accreting pulsars. The proposal is focused on those X-ray pulsars the spectra of which contain an evidence or an indication of a cyclotron scattering feature but for which the evolution of the broad-band X-ray spectrum with luminosity (i.e. throughout an outburst) has not been so far studied in details. We request a total of 800 ksec of exposure time divided into several pointings to follow the spectral evolution with flux of the source entered in outburst.
Publications	Accurate localization and identification of six hard X-ray sources from Chandra and XMM-Newton data - Karasev, D. I., Lutovinov, A. A.,Revnivtsev, M. G.,Krivonos, R. A. (2012-10-01) http://ui.adsabs.harvard.edu/#abs/2012AstL...38..629K A propeller scenario for the gamma-ray emission of low-mass X-ray binaries: the case of XSS J12270-4859 - Papitto, A., Torres, D. F.,Li, Jian (2014-03-01) http://ui.adsabs.harvard.edu/#abs/2014MNRAS.438.2105P 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 Characterization of new hard X-ray cataclysmic variables - Bernardini, F., de Martino, D.,Falanga, M.,Mukai, K.,Matt, G.,Bonnet-Bidaud, J. -M.,Masetti, N.,Mouchet, M. (2012-06-01) http://ui.adsabs.harvard.edu/#abs/2012A&A...542A..22B 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 Constraints on positron annihilation kinematics in the inner Galaxy - Siegert, Thomas, Crocker, Roland M.,Diehl, Roland,Krause, Martin G. H.,Panther, Fiona H.,Pleintinger, Moritz M. M.,Weinberger, Christoph (2019-07-01) http://ui.adsabs.harvard.edu/#abs/2019A&A...627A.126S Cumulative luminosity distributions of supergiant fast X-ray transients in hard X-rays - Paizis, A., Sidoli, L. (2014-04-01) http://ui.adsabs.harvard.edu/#abs/2014MNRAS.439.3439P 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 Gamma-ray spectroscopy of positron annihilation in the Milky Way - Siegert, Thomas, Diehl, Roland,Khachatryan, Gerasim,Krause, Martin G. H.,Guglielmetti, Fabrizia,Greiner, Jochen,Strong, Andrew W.,Zhang, Xiaoling (2016-02-01) http://ui.adsabs.harvard.edu/#abs/2016A&A...586A..84S 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 Kinematics of massive star ejecta in the Milky Way as traced by ²⁶Al - Kretschmer, Karsten, Diehl, Roland,Krause, Martin,Burkert, Andreas,Fierlinger, Katharina,Gerhard, Ortwin,Greiner, Jochen,Wang, Wei (2013-11-01) http://ui.adsabs.harvard.edu/#abs/2013A&A...559A..99K Leptonic origin of the 100 MeV γ-ray emission from the Galactic centre - Malyshev, D., Chernyakova, M.,Neronov, A.,Walter, R. (2015-10-01) http://ui.adsabs.harvard.edu/#abs/2015A&A...582A..11M Luminosity-dependent spectral and timing properties of the accreting pulsar GX 304-1 measured with INTEGRAL - Malacaria, C., Klochkov, D.,Santangelo, A.,Staubert, R. (2015-09-01) http://ui.adsabs.harvard.edu/#abs/2015A&A...581A.121M 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 Outburst of GX 304-1 monitored with INTEGRAL: positive correlation between the cyclotron line energy and flux - Klochkov, D., Doroshenko, V.,Santangelo, A.,Staubert, R.,Ferrigno, C.,Kretschmar, P.,Caballero, I.,Wilms, J.,Kreykenbohm, I.,Pottschmidt, K.,Rothschild, R. E.,Wilson-Hodge, C. A.,Puhlhofer, G. (2012-06-01) http://ui.adsabs.harvard.edu/#abs/2012A&A...542L..28K Positive correlation between the cyclotron line energy and luminosity in sub-critical X-ray pulsars: Doppler effect in the accretion channel - Mushtukov, Alexander A., Tsygankov, Sergey S.,Serber, Alexander V.,Suleimanov, Valery F.,Poutanen, Juri (2015-12-01) http://ui.adsabs.harvard.edu/#abs/2015MNRAS.454.2714M 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 Prolonged sub-luminous state of the new transitional pulsar candidate CXOU J110926.4-650224 - Coti Zelati, Francesco, Papitto, Alessandro,de Martino, Domitilla,Buckley, David A. H.,Odendaal, Alida,Li, Jian,Russell, Thomas D.,Torres, Diego F.,Mazzola, Simona M.,Bozzo, Enrico,Gromadzki, Mariusz,Campana, Sergio,Rea, Nanda,Ferrigno, Carlo,Migliari, Simone (2019-02-01) http://ui.adsabs.harvard.edu/#abs/2019A&A...622A.211C 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 Search for 511 keV emission in satellite galaxies of the Milky Way with INTEGRAL/SPI - Siegert, Thomas, Diehl, Roland,Vincent, Aaron C.,Guglielmetti, Fabrizia,Krause, Martin G. H.,Boehm, Celine (2016-10-01) http://ui.adsabs.harvard.edu/#abs/2016A&A...595A..25S Searching for γ-Ray Blazar Candidates among the Unidentified INTEGRAL Sources - Massaro, F., Paggi, A.,D Abrusco, R.,Tosti, G. (2012-05-01) http://ui.adsabs.harvard.edu/#abs/2012ApJ...750L..35M Searching for redshifted 2.2 MeV neutron-capture lines from accreting neutron stars: Theoretical X-ray luminosity requirements and INTEGRAL/SPI observations - Ducci, L., Santangelo, A.,Tsygankov, S.,Mushtukov, A.,Ferrigno, C. (2024-10-01) http://ui.adsabs.harvard.edu/#abs/2024A&A...690A.309D Study of eclipsing binary and multiple systems in OB associations V: MQ Cen in Crux OB1 - Bakis, Volkan, Mikulasek, Zdenek,Janik, Jan,Zejda, Miloslav,Tunc, Efecan,Nitschelm, Christian,Bilir, Selcuk,Liska, Jiri,Bakis, Hicran (2019-09-01) http://ui.adsabs.harvard.edu/#abs/2019Ap&SS.364..162B 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 Galactic ²⁶Al Emission Map as Revealed by INTEGRAL SPI - Bouchet, Laurent, Jourdain, Elisabeth,Roques, Jean-Pierre (2015-03-01) http://ui.adsabs.harvard.edu/#abs/2015ApJ...801..142B 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 The INTEGRAL/IBIS AGN catalogue - I. X-ray absorption properties versus optical classification - Malizia, A., Bassani, L.,Bazzano, A.,Bird, A. J.,Masetti, N.,Panessa, F.,Stephen, J. B.,Ubertini, P. (2012-11-01) http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426.1750M The spectral catalogue of INTEGRAL gamma-ray bursts. results of the joint IBIS/SPI spectral analysis - Bosnjak, Z., Gotz, D.,Bouchet, L.,Schanne, S.,Cordier, B. (2014-01-01) http://ui.adsabs.harvard.edu/#abs/2014A&A...561A..25B 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 Unveiling the nature of INTEGRAL objects through optical spectroscopy. X. A new multi-year, multi-observatory campaign - Masetti, N., Parisi, P.,Palazzi, E.,Jimenez-Bailon, E.,Chavushyan, V.,McBride, V.,Rojas, A. F.,Steward, L.,Bassani, L.,Bazzano, A.,Bird, A. J.,Charles, P. A.,Galaz, G.,Landi, R.,Malizia, A.,Mason, E.,Minniti, D.,Morelli, L.,Schiavone, F.,Stephen, J. B.,Ubertini, P. (2013-08-01) http://ui.adsabs.harvard.edu/#abs/2013A&A...556A.120M Variations of the X-ray INTEGRAL spectrum of the active galactic nucleus of NGC 4945 - Fedorova, E. V., Zhdanov, V. I. (2016-07-01) http://ui.adsabs.harvard.edu/#abs/2016KPCB...32..172F 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	2012-01-17T11:38:31Z / 2012-02-08T11:13:01Z
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	2025-03-25T09:54:37Z
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Klochkov, 2025, 'Following the evolution of the X-ray emitting structure with luminosity in transient accreting pulsars.', 1.0, European Space Agency, https://doi.org/10.57780/esa-aocium5