A dataset provided by the European Space Agency

Name: Target of Opportunity Observations of an Outburst in A 0535+26
Published: 2025-03-25T09:54:32Z

Proposal ID	0320049
Obs ID	03200490001
Title	Target of Opportunity Observations of an Outburst in A 0535+26
Download Data Associated to the proposal	https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0320049
DOI	https://doi.org/10.57780/esa-cotqp7k
Author	Kretschmar
Abstract	Renewing our accepted TOO proposal of AO1 and AO2, we propose to observe an outburst in the Be/X-ray binary pulsar A 0535+26 in two stages, each with a 200 ks observation. The first stage is triggered by a normal outburst (200 mCrab, 2-10 keV); the second stage is to be done if the outburst develops turns out to be a giant outburst (>=1 Crab).The first observation will measure the broad-band, phase averaged spectrum with high significance up to ~200 keV, testing the presence of a 55 keV cyclotron line at half the energy of the known 110 keV line. With the high energy resolution of SPI and ISGRI , we will study in detail the line shapes. Previous instruments, mostly scintillators, lacked the energy resolution for these studies.The possible second observation, when A 0535+26 is significantly brighter than the Crab below 200 keV,will allow us to perform detailed phase-resolved spectral studies. By comparing the evolution of the spectrum with pulse phase to Monte-Carlo simulations of cyclotron line formation, we hope to infer details of the emission region, such as the overall geometry, the optical depth, and the viewing angle of the observer to the magnetic dipole axis.Finally, we will search for redshifted gamma-ray lines, particularly 2.2 MeV photons from deuterium formation, from nuclear processes at the neutron star polar cap. This has the exciting possibility of determining the redshift at the neutron star surface, thereby constraining the neutron star equation of state.Because of the typically long (few year) intervals between major outbursts, it is possible that only one such event will occur during the Integral mission lifetime. It is therefore important that it be a preassigned TOO in order that any outburst be optimally observed.
Publications	20-100 keV properties of cataclysmic variables detected in the INTEGRAL/IBIS survey - Barlow, E. J., Knigge, C.,Bird, A. J.,J Dean, A.,Clark, D. J.,Hill, A. B.,Molina, M.,Sguera, V. (2006-10-01) http://ui.adsabs.harvard.edu/#abs/2006MNRAS.372..224B A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL - Caballero, I., Kretschmar, P.,Santangelo, A.,Staubert, R.,Klochkov, D.,Camero, A.,Ferrigno, C.,Finger, M. H.,Kreykenbohm, I.,McBride, V. A.,Pottschmidt, K.,Rothschild, R. E.,Schonherr, G.,Segreto, A.,Suchy, S.,Wilms, J.,Wilson, C. A. (2007-04-01) http://ui.adsabs.harvard.edu/#abs/2007A&A...465L..21C A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies - Lubinski, P., Beckmann, V.,Gibaud, L.,Paltani, S.,Papadakis, I. E.,Ricci, C.,Soldi, S.,Turler, M.,Walter, R.,Zdziarski, A. A. (2016-05-01) http://ui.adsabs.harvard.edu/#abs/2016MNRAS.458.2454L A description of sources detected by INTEGRAL during the first 4 years of observations - Bodaghee, A., Courvoisier, T. J. -L.,Rodriguez, J.,Beckmann, V.,Produit, N.,Hannikainen, D.,Kuulkers, E.,Willis, D. R.,Wendt, G. (2007-05-01) http://ui.adsabs.harvard.edu/#abs/2007A&A...467..585B Analysis and interpretation of inner-heliospheric SEP events with the ESA Standard Radiation Environment Monitor (SREM) onboard the INTEGRAL and Rosetta Missions - Georgoulis, Manolis K., Papaioannou, Athanasios,Sandberg, Ingmar,Anastasiadis, Anastasios,Daglis, Ioannis A.,Rodriguez-Gasen, Rosa,Aran, Angels,Sanahuja, Blai,Nieminen, Petteri (2018-09-01) http://ui.adsabs.harvard.edu/#abs/2018JSWSC...8A..40G An asymmetric distribution of positrons in the Galactic disk revealed by γ-rays - Weidenspointner, Georg, Skinner, Gerry,Jean, Pierre,Knodlseder, Jurgen,von Ballmoos, Peter,Bignami, Giovanni,Diehl, Roland,Strong, Andrew W.,Cordier, Bertrand,Schanne, Stephane,Winkler, Christoph (2008-01-01) http://ui.adsabs.harvard.edu/#abs/2008Natur.451..159W A photometric study of two neglected eclipsing binaries - Kudak, V., Fedurco, M.,Perig, V.,Parimucha, S. (2021-08-01) http://ui.adsabs.harvard.edu/#abs/2021RAA....21..174K A recent change in the optical and γ-ray polarization of the Crab nebula and pulsar - Moran, P., Kyne, G.,Gouiffes, C.,Laurent, P.,Hallinan, G.,Redfern, R. M.,Shearer, A. (2016-03-01) http://ui.adsabs.harvard.edu/#abs/2016MNRAS.456.2974M 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 Catalog of short gamma-ray transients detected in the SPI/INTEGRAL experiment - Minaev, P. Yu., Pozanenko, A. S.,Molkov, S. V.,Grebenev, S. A. (2014-05-01) http://ui.adsabs.harvard.edu/#abs/2014AstL...40..235M 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 Contribution of the Accretion Disk, Hot Corona, and Obscuring Torus to the Luminosity of Seyfert Galaxies: INTEGRAL and Spitzer Observations - Sazonov, S., Willner, S. P.,Goulding, A. D.,Hickox, R. C.,Gorjian, V.,Werner, M. W.,Churazov, E.,Krivonos, R.,Revnivtsev, M.,Sunyaev, R.,Jones, C.,Murray, S. S.,Vikhlinin, A.,Fabian, A. C.,Forman, W. R. (2012-10-01) http://ui.adsabs.harvard.edu/#abs/2012ApJ...757..181S Diffuse Emission Measurement with the SPectrometer on INTEGRAL as an Indirect Probe of Cosmic-Ray Electrons and Positrons - Bouchet, Laurent, Strong, Andrew W.,Porter, Troy A.,Moskalenko, Igor V.,Jourdain, Elisabeth,Roques, Jean-Pierre (2011-09-01) http://ui.adsabs.harvard.edu/#abs/2011ApJ...739...29B Discovery of the Radio and X-Ray Counterpart of TeV γ-Ray Source HESS J1731-347 - Tian, W. W., Leahy, D. A.,Haverkorn, M.,Jiang, B. (2008-06-01) http://ui.adsabs.harvard.edu/#abs/2008ApJ...679L..85T Discrete Mass Ejections from the Be/X-Ray Binary A0535+26/HD 245770 - Yan, Jingzhi, Li, Hui,Liu, Qingzhong (2012-01-01) http://ui.adsabs.harvard.edu/#abs/2012ApJ...744...37Y 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 Earth occultation imaging of the low energy gamma-ray sky with GBM - Rodi, J., Cherry, M. L.,Case, G. L.,Camero-Arranz, A.,Chaplin, V.,Finger, M. H.,Jenke, P.,Wilson-Hodge, C. A. (2014-02-01) http://ui.adsabs.harvard.edu/#abs/2014A&A...562A...7R Extended emission from short gamma-ray bursts detected with SPI-ACS/INTEGRAL - Minaev, P. Yu., Pozanenko, A. S.,Loznikov, V. M. (2010-10-01) http://ui.adsabs.harvard.edu/#abs/2010AstL...36..707M Extending the energy range of AstroSat-CZTI up to 380 keV with compton spectroscopy - Kumar, Abhay, Chattopadhyay, Tanmoy,Vadawale, Santosh V.,Rao, A. R.,Mithun, N. P. S.,Bhalerao, Varun,Bhattacharya, Dipankar (2022-10-01) http://ui.adsabs.harvard.edu/#abs/2022MNRAS.516.3102K 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 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 Global characteristics of GRBs observed with INTEGRAL and the inferred large population of low-luminosity GRBs - Foley, S., McGlynn, S.,Hanlon, L.,McBreen, S.,McBreen, B. (2008-06-01) http://ui.adsabs.harvard.edu/#abs/2008A&A...484..143F Hard X-ray emission from the Galactic ridge - Krivonos, R., Revnivtsev, M.,Churazov, E.,Sazonov, S.,Grebenev, S.,Sunyaev, R. (2007-03-01) http://ui.adsabs.harvard.edu/#abs/2007A&A...463..957K Hard X-ray properties of magnetic cataclysmic variables - Scaringi, S., Bird, A. J.,Norton, A. J.,Knigge, C.,Hill, A. B.,Clark, D. J.,Dean, A. J.,McBride, V. A.,Barlow, E. J.,Bassani, L.,Bazzano, A.,Fiocchi, M.,Landi, R. (2010-02-01) http://ui.adsabs.harvard.edu/#abs/2010MNRAS.401.2207S Hard-X-ray spectra of active galactic nuclei in the INTEGRAL complete sample - Molina, M., Bassani, L.,Malizia, A.,Stephen, J. B.,Bird, A. J.,Bazzano, A.,Ubertini, P. (2013-08-01) http://ui.adsabs.harvard.edu/#abs/2013MNRAS.433.1687M 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/IBIS 7-year All-Sky Hard X-Ray Survey. II. Catalog of sources - Krivonos, R., Tsygankov, S.,Revnivtsev, M.,Grebenev, S.,Churazov, E.,Sunyaev, R. (2010-11-01) http://ui.adsabs.harvard.edu/#abs/2010A&A...523A..61K INTEGRAL/IBIS 7-year All-Sky Hard X-ray Survey. I. Image reconstruction - Krivonos, R., Revnivtsev, M.,Tsygankov, S.,Sazonov, S.,Vikhlinin, A.,Pavlinsky, M.,Churazov, E.,Sunyaev, R. (2010-09-01) http://ui.adsabs.harvard.edu/#abs/2010A&A...519A.107K INTEGRAL/IBIS all-sky survey in hard X-rays - Krivonos, R., Revnivtsev, M.,Lutovinov, A.,Sazonov, S.,Churazov, E.,Sunyaev, R. (2007-11-01) http://ui.adsabs.harvard.edu/#abs/2007A&A...475..775K INTEGRAL/IBIS and Swift/XRT observations of hard cataclysmic variables - Landi, R., Bassani, L.,Dean, A. J.,Bird, A. J.,Fiocchi, M.,Bazzano, A.,Nousek, J. A.,Osborne, J. P. (2009-01-01) http://ui.adsabs.harvard.edu/#abs/2009MNRAS.392..630L INTEGRAL/IBIS nine-year Galactic hard X-ray survey - Krivonos, R., Tsygankov, S.,Lutovinov, A.,Revnivtsev, M.,Churazov, E.,Sunyaev, R. (2012-09-01) http://ui.adsabs.harvard.edu/#abs/2012A&A...545A..27K INTEGRAL SPI All-Sky View in Soft Gamma Rays: A Study of Point-Source and Galactic Diffuse Emission - Bouchet, L., Jourdain, E.,Roques, J. -P.,Strong, A.,Diehl, R.,Lebrun, F.,Terrier, R. (2008-06-01) http://ui.adsabs.harvard.edu/#abs/2008ApJ...679.1315B 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 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 Masses and accretion rates of supermassive black holes in active galactic nuclei from the INTEGRAL survey - Khorunzhev, G. A., Sazonov, S. Yu.,Burenin, R. A.,Tkachenko, A. Yu. (2012-08-01) http://ui.adsabs.harvard.edu/#abs/2012AstL...38..475K 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 On the Morphology of the Electron-Positron Annihilation Emission as Seen by Spi/integral - Bouchet, L., Roques, J. P.,Jourdain, E. (2010-09-01) http://ui.adsabs.harvard.edu/#abs/2010ApJ...720.1772B Polarization of the Crab Pulsar and Nebula as Observed by the INTEGRAL/IBIS Telescope - Forot, M., Laurent, P.,Grenier, I. A.,Gouiffes, C.,Lebrun, F. (2008-11-01) http://ui.adsabs.harvard.edu/#abs/2008ApJ...688L..29F Polarized Gamma-Ray Emission from the Crab - Dean, A. J., Clark, D. J.,Stephen, J. B.,McBride, V. A.,Bassani, L.,Bazzano, A.,Bird, A. J.,Hill, A. B.,Shaw, S. E.,Ubertini, P. (2008-08-01) http://ui.adsabs.harvard.edu/#abs/2008Sci...321.1183D Probing clumpy stellar winds with a neutron star - Walter, R., Zurita Heras, J. (2007-12-01) http://ui.adsabs.harvard.edu/#abs/2007A&A...476..335W Progressive steepening of the SNR RX J1713.7-3946 X-ray spectrum from XMM-Newton to INTEGRAL - Kuznetsova, Ekaterina, Krivonos, Roman,Churazov, Eugene,Lyskova, Natalia,Lutovinov, Alexander (2019-10-01) http://ui.adsabs.harvard.edu/#abs/2019MNRAS.489.1828K Pulse-amplitude-resolved spectroscopy of bright accreting pulsars: indication of two accretion regimes - Klochkov, D., Staubert, R.,Santangelo, A.,Rothschild, R. E.,Ferrigno, C. (2011-08-01) http://ui.adsabs.harvard.edu/#abs/2011A&A...532A.126K Putting all the X in one basket: Updated X-ray constraints on sub-GeV Dark Matter - Cirelli, Marco, Fornengo, Nicolao,Koechler, Jordan,Pinetti, Elena,Roach, Brandon M. (2023-07-01) http://ui.adsabs.harvard.edu/#abs/2023JCAP...07..026C Radioactive ²⁶Al from the Scorpius-Centaurus association - Diehl, R., Lang, M. G.,Martin, P.,Ohlendorf, H.,Preibisch, Th.,Voss, R.,Jean, P.,Roques, J. -P.,von Ballmoos, P.,Wang, W. (2010-11-01) http://ui.adsabs.harvard.edu/#abs/2010A&A...522A..51D Reflection in Seyfert galaxies and the unified model of AGN - Ricci, C., Walter, R.,Courvoisier, T. J. -L.,Paltani, S. (2011-08-01) http://ui.adsabs.harvard.edu/#abs/2011A&A...532A.102R 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 Search for a Redshifted 2.2 MeV Neutron Capture Line from A0535+262 in Outburst - Caliskan, Sirin, Kalemci, Emrah,Baring, Matthew G.,Boggs, Steven E.,Kretschmar, Peter (2009-03-01) http://ui.adsabs.harvard.edu/#abs/2009ApJ...694..593C Search for outbursts in the narrow 511-keV line from compact sources based on INTEGRAL data - Tsygankov, S. S., Churazov, E. M. (2010-04-01) http://ui.adsabs.harvard.edu/#abs/2010AstL...36..237T Searching for the 511 keV annihilation line from galactic compact objects with the IBIS gamma ray telescope - De Cesare, G., (2011-07-01) http://ui.adsabs.harvard.edu/#abs/2011A&A...531A..56D Spatial clustering and halo occupation distribution modelling of local AGN via cross-correlation measurements with 2MASS galaxies - Krumpe, Mirko, Miyaji, Takamitsu,Coil, Alison L.,Aceves, Hector (2018-02-01) http://ui.adsabs.harvard.edu/#abs/2018MNRAS.474.1773K Spectral and intensity variations of Galactic ²⁶Al emission - Wang, W., Lang, M. G.,Diehl, R.,Halloin, H.,Jean, P.,Knodlseder, J.,Kretschmer, K.,Martin, P.,Roques, J. P.,Strong, A. W.,Winkler, C.,Zhang, X. L. (2009-03-01) http://ui.adsabs.harvard.edu/#abs/2009A&A...496..713W SPI observations of the diffuse ⁶⁰Fe emission in the Galaxy - Wang, W., Harris, M. J.,Diehl, R.,Halloin, H.,Cordier, B.,Strong, A. W.,Kretschmer, K.,Knodlseder, J.,Jean, P.,Lichti, G. G.,Roques, J. P.,Schanne, S.,von Kienlin, A.,Weidenspointner, G.,Wunderer, C. (2007-07-01) http://ui.adsabs.harvard.edu/#abs/2007A&A...469.1005W Study of Long-lived Radioactive Sources in the Galaxy with INTEGRAL/SPI - Wang, Wei, (2008-01-01) http://ui.adsabs.harvard.edu/#abs/2008PASP..120..118W 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 1st INTEGRAL SPI-ACS gamma-ray burst catalogue - Rau, A., Kienlin, A. V.,Hurley, K.,Lichti, G. G. (2005-08-01) http://ui.adsabs.harvard.edu/#abs/2005A&A...438.1175R The catalog of variable sources detected by INTEGRAL. I. Catalog and techniques - Telezhinsky, I., Eckert, D.,Savchenko, V.,Neronov, A.,Produit, N.,Courvoisier, T. J. -L. (2010-11-01) http://ui.adsabs.harvard.edu/#abs/2010A&A...522A..68T The Fourth IBIS/ISGRI Soft Gamma-ray Survey Catalog - Bird, A. J., Bazzano, A.,Bassani, L.,Capitanio, F.,Fiocchi, M.,Hill, A. B.,Malizia, A.,McBride, V. A.,Scaringi, S.,Sguera, V.,Stephen, J. B.,Ubertini, P.,Dean, A. J.,Lebrun, F.,Terrier, R.,Renaud, M.,Mattana, F.,Gotz, D.,Rodriguez, J.,Belanger, G.,Walter, R.,Winkler, C. (2010-01-01) http://ui.adsabs.harvard.edu/#abs/2010ApJS..186....1B 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 hard X-ray view of bright infrared galaxies - Walter, R., Cabral, N. (2009-04-01) http://ui.adsabs.harvard.edu/#abs/2009A&A...497...97W The High-Energy Emission of the Crab Nebula from 20 keV TO 6 MeV with Integral SPI - Jourdain, E., Roques, J. P. (2009-10-01) http://ui.adsabs.harvard.edu/#abs/2009ApJ...704...17J The IBIS Soft Gamma-Ray Sky after 1000 Integral Orbits - Bird, A. J., Bazzano, A.,Malizia, A.,Fiocchi, M.,Sguera, V.,Bassani, L.,Hill, A. B.,Ubertini, P.,Winkler, C. (2016-03-01) http://ui.adsabs.harvard.edu/#abs/2016ApJS..223...15B The INTEGRAL complete sample of type 1 AGN - Molina, M., Bassani, L.,Malizia, A.,Stephen, J. B.,Bird, A. J.,Dean, A. J.,Panessa, F.,de Rosa, A.,Landi, R. (2009-11-01) http://ui.adsabs.harvard.edu/#abs/2009MNRAS.399.1293M The INTEGRAL High-energy Cut-off Distribution of Type 1 Active Galactic Nuclei - Malizia, A., Molina, M.,Bassani, L.,Stephen, J. B.,Bazzano, A.,Ubertini, P.,Bird, A. J. (2014-02-01) http://ui.adsabs.harvard.edu/#abs/2014ApJ...782L..25M 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 INTEGRAL long monitoring of persistent ultra compact X-ray bursters - Fiocchi, M., Bazzano, A.,Ubertini, P.,Bird, A. J.,Natalucci, L.,Sguera, V. (2008-12-01) http://ui.adsabs.harvard.edu/#abs/2008A&A...492..557F The second INTEGRAL AGN catalogue - Beckmann, V., Soldi, S.,Ricci, C.,Alfonso-Garzon, J.,Courvoisier, T. J. -L.,Domingo, A.,Gehrels, N.,Lubinski, P.,Mas-Hesse, J. M.,Zdziarski, A. A. (2009-10-01) http://ui.adsabs.harvard.edu/#abs/2009A&A...505..417B 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 The Third IBIS/ISGRI Soft Gamma-Ray Survey Catalog - Bird, A. J., Malizia, A.,Bazzano, A.,Barlow, E. J.,Bassani, L.,Hill, A. B.,Belanger, G.,Capitanio, F.,Clark, D. J.,Dean, A. J.,Fiocchi, M.,Gotz, D.,Lebrun, F.,Molina, M.,Produit, N.,Renaud, M.,Sguera, V.,Stephen, J. B.,Terrier, R.,Ubertini, P.,Walter, R.,Winkler, C.,Zurita, J. (2007-05-01) http://ui.adsabs.harvard.edu/#abs/2007ApJS..170..175B Time Evolution of Flares in GRB 130925A: Jet Precession in a Black Hole Accretion System - Hou, Shu-Jin, Liu, Tong,Gu, Wei-Min,Lin, Da-Bin,Sun, Mou-Yuan,Wu, Xue-Feng,Lu, Ju-Fu (2014-01-01) http://ui.adsabs.harvard.edu/#abs/2014ApJ...781L..19H Timing characteristics of the hard X-ray emission from bright X-ray pulsars based on INTEGRAL data - Lutovinov, A. A., Tsygankov, S. S. (2009-07-01) http://ui.adsabs.harvard.edu/#abs/2009AstL...35..433L Timing properties of gamma-ray bursts detected by SPI-ACS detector onboard INTEGRAL - Savchenko, V., Neronov, A.,Courvoisier, T. J. -L. (2012-05-01) http://ui.adsabs.harvard.edu/#abs/2012A&A...541A.122S 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 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 When a Standard Candle Flickers - Wilson-Hodge, Colleen A., Cherry, Michael L.,Case, Gary L.,Baumgartner, Wayne H.,Beklen, Elif,Narayana Bhat, P.,Briggs, Michael S.,Camero-Arranz, Ascension,Chaplin, Vandiver,Connaughton, Valerie,Finger, Mark H.,Gehrels, Neil,Greiner, Jochen,Jahoda, Keith,Jenke, Peter,Kippen, R. Marc,Kouveliotou, Chryssa,Krimm, Hans A.,Kuulkers, Erik,Lund, Niels,Meegan, Charles A.,Natalucci, Lorenzo,Paciesas, William S.,Preece, Robert,Rodi, James C.,Shaposhnikov, Nikolai,Skinner, Gerald K.,Swartz, Doug,von Kienlin, Andreas,Diehl, Roland,Zhang, Xiao-Ling (2011-02-01) http://ui.adsabs.harvard.edu/#abs/2011ApJ...727L..40W 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 X-Ray and Optical Observations of A 0535+26 - Camero-Arranz, A., Finger, M. H.,Wilson-Hodge, C. A.,Jenke, P.,Steele, I.,Coe, M. J.,Gutierrez-Soto, J.,Kretschmar, P.,Caballero, I.,Yan, J.,Rodriguez, J.,Suso, J.,Case, G.,Cherry, M. L.,Guiriec, S.,McBride, V. A. (2012-07-01) http://ui.adsabs.harvard.edu/#abs/2012ApJ...754...20C
Temporal Coverage	2005-08-31T11:07:06Z / 2005-09-02T21:20:59Z
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	2025-03-25T09:54:32Z
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Kretschmar, 2025, 'Target of Opportunity Observations of an Outburst in A 0535+26', 1.0, European Space Agency, https://doi.org/10.57780/esa-cotqp7k