A dataset provided by the European Space Agency

Name: Galactic positron annihilation radiation: proving the existence of halo emission by mid-latitude observations
Published: 2025-03-25T09:54:34Z

Proposal ID	0420021
Obs ID	04200210001
Title	Galactic positron annihilation radiation: proving the existence of halo emission by mid-latitude observations
Download Data Associated to the proposal	https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0420021
DOI	https://doi.org/10.57780/esa-9trc66r
Author	Weidenspointner
Abstract	We propose to continue and complete our program for observing the sky at intermediate Galactic latitudes above and below the Galactic bulge with the goal of establishing the large-scale spatial distribution of positron annihilation radiation, and in particular of proving the existence of a halo component. The detection of an annihilation halo would constitute a significant break-through for positron astrophysics, with far-reaching implications for origin, diffusion, and annihilation of positrons in our Galaxy.We have published the first sky maps in the 511 keV line (Knoedlseder et al. 2005) and in the positronium continuum (Weidenspointner et al. 2006), which clearly showed that the positron annihilation radiation from our Galaxy is brightest around the Galactic center. The observed emission could not be unambiguously decomposed into bulge, halo, and disk components. But recent analyses suggest more and more strongly the existence of a very extended halo component. We propose to address this issue by observing at intermediate latitudes south of the Galactic center (l=0 deg, b=-25 deg) for 2 Ms, complementing a similar Cycle 3 observation north of the Galactic center (l=0 deg, b=+25 deg). Any 511 keV line emission from these regions - for which there is increasing evidence - is dominated by the halo component. The proposed observations are therefore ideally suited to establish the existence of, or to set stringent limits on, a Galactic halo component. Possible in situ halo positron sources include members of the old stellar population (such as Type Ia supernovae, novae, or low-mass X-ray binaries) or light dark matter.
Publications	511 keV excess and primordial black holes - Keith, Celeste, Hooper, Dan (2021-09-01) http://ui.adsabs.harvard.edu/#abs/2021PhRvD.104f3033K 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 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 Anomalous Cepheids Discovered in a Sample of Galactic Short Period Type II Cepheids - Jurkovic, M. I., (2018-12-01) http://ui.adsabs.harvard.edu/#abs/2018SerAJ.197...13J A possible cyclotron resonance scattering feature near 0.7 keV in X1822-371 - Iaria, R., Di Salvo, T.,Matranga, M.,Galiano, C. G.,D Ai, A.,Riggio, A.,Burderi, L.,Sanna, A.,Ferrigno, C.,Del Santo, M.,Pintore, F.,Robba, N. R. (2015-05-01) http://ui.adsabs.harvard.edu/#abs/2015A&A...577A..63I 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 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 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 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 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 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 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 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 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 bursts recorded by the IBIS telescope of the INTEGRAL observatory in 2003-2009 - Chelovekov, I. V., Grebenev, S. A. (2011-09-01) http://ui.adsabs.harvard.edu/#abs/2011AstL...37..597C 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 and Swift/XRT observations of IGR J19405-3016 - Zhang, S., Chen, Y. P.,Torres, D. F.,Wang, J. M.,Li, T. P.,Ge, J. Q. (2009-10-01) http://ui.adsabs.harvard.edu/#abs/2009A&A...505..553Z 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 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 {$gamma$}-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 INTEGRAL x-ray constraints on sub-GeV dark matter - Cirelli, Marco, Fornengo, Nicolao,Kavanagh, Bradley J.,Pinetti, Elena (2021-03-01) http://ui.adsabs.harvard.edu/#abs/2021PhRvD.103f3022C JEM-X/INTEGRAL X-ray survey of the galactic center region - Grebenev, S. A., Mereminskiy, I. A. (2015-12-01) http://ui.adsabs.harvard.edu/#abs/2015AstL...41..765G 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 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 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 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 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 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 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 Sub-GeV dark matter annihilation: limits from Milky Way observations with INTEGRAL - Siegert, Thomas, Calore, Francesca,Serpico, Pasquale Dario (2024-02-01) http://ui.adsabs.harvard.edu/#abs/2024MNRAS.528.3433S 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 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 data mining II: An analysis of 33 eclipsing binary light-curves observed by the INTEGRAL/OMC - Zasche, P., (2010-01-01) http://ui.adsabs.harvard.edu/#abs/2010NewA...15..150Z The first GRB survey of the IBIS/PICsIT archive - Bianchin, V., Mereghetti, S.,Guidorzi, C.,Foschini, L.,Vianello, G.,Malaguti, G.,Di Cocco, G.,Gianotti, F.,Schiavone, F. (2011-12-01) http://ui.adsabs.harvard.edu/#abs/2011A&A...536A..46B 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 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 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 updated spectral catalogue of INTEGRAL gamma-ray bursts - Vianello, G., Gotz, D.,Mereghetti, S. (2009-03-01) http://ui.adsabs.harvard.edu/#abs/2009A&A...495.1005V Three New Galactic Double-mode Pulsating Stars - Hajdu, G., Jurcsik, J.,Sodor, A. (2009-04-01) http://ui.adsabs.harvard.edu/#abs/2009IBVS.5882....1H 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 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 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	2006-10-12T07:03:49Z / 2006-11-11T14:29:18Z
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	2025-03-25T09:54:34Z
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Weidenspointner, 2025, 'Galactic positron annihilation radiation: proving the existence of halo emission by mid-latitude observations', 1.0, European Space Agency, https://doi.org/10.57780/esa-9trc66r