1ES 1959+650

BL Lac object in the constellation Draco 1ES 1959+650 J2000 Draco 19 59 59.85 +65 08 54.65 0.047000 14,090 km/s 12.8 BL Lac, Flat-Spectrum Radio Source 37.15 kpc ly -2 off(diameter; 2MASS K-band total isophote) 2MASX J19595975+6508547, LEDA 2674942, NVSS J195959+650854, TXS 1959+650, TeV J1959+651 File:Image of 1ES 1959+650.jpg The BL Lac object 1ES 1959+650. 676 Mly (207.26 Mpc) 1ES 1959+650 is a BL Lacertae object or a BL Lac object located in the eastern constellation of Draco, about 676 million light years from Earth.By Name NASA/IPAC Extragalactic Database http://ned.ipac.caltech.edu/byname?objname=LEDA+2674942&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 2024-10-19 ned.ipac.caltech.edu It was first discovered as an astronomical radio source in 1987 by Green Bank Radio Telescope and further categorized as both a flat-spectrum radio source and an X-ray source during the Einstein IPC Slew Survey conducted in the early 1990s.1ES 1959+650 - Frankfurt Quasar Monitoring http://quasar.square7.ch/fqm/1959+650.html 2024-10-19 quasar.square7.ch Characteristics 1ES 1959+650 has an active galactic nucleus. It is classified as a high energy-peaked BL Lac objectHu Xin-Ke Yu Yu-Wei Zhang Jin Wu Tan-Zheng Lian Ji-Shun Wang Xiang-Gao Zhang Hai-Ming Liang En-Wei 2024-03-01 X-Ray Polarization Variability of High Spectral Peak BL Lacertaes: Cases of 1ES 1959+650 and PKS 2155–304 The Astrophysical Journal Letters 963 2 L41 10.3847/2041-8213/ad2a4f free 2312.01755 2024ApJ...963L..41H 2041-8205 or a synchrotron peaked blazar with a synchrotron peak of the spectral energy distribution appearing in ultraviolet and X-ray bands.Wani Kiran Gaur Haritma Patil M. K. 2023-07-01 X-Ray Studies of Blazar 1ES 1959+650 Using Swift and XMM-Newton Satellite The Astrophysical Journal 951 2 94 10.3847/1538-4357/acd186 free 2305.03246 2023ApJ...951...94W 0004-637XNowakowski Tomasz Phys.org Blazar 1ES 1959+650 investigated with Swift and XMM-Newton satellites https://phys.org/news/2023-05-blazar-1es-swift-xmm-newton-satellites.html 2024-10-19 phys.org en The host galaxy of 1ES 1959+650 is a gas-rich elliptical galaxy with a dust laneJannuzi Buell T. Yanny Brian Impey Chris 1997-12-10 Hubble Space TelescopeImaging of the Host Galaxies of Three X-Ray–selected BL Lacertae Objects https://articles.adsabs.harvard.edu//full/1999A%26A...352...85F/0000101.000.html The Astrophysical Journal 491 1 146–152 10.1086/304944 astro-ph/9910106 1999A&A...352...85F 0004-637XPerlman Eric S. Stocke John T. Schachter Jonathan F. Elvis Martin Ellingson Erica Urry C. Megan Potter Michael Impey Chris D. Kolchinsky Peter June 1996 The Einstein Slew Survey Sample of BL Lacertae Objects https://articles.adsabs.harvard.edu/pdf/1999A%26A...341..683H The Astrophysical Journal Supplement Series 104 251 10.1086/192300 1996ApJS..104..251P 0067-0049 located 0.8" north of its nucleus. Its structure is complex, indicating a past galaxy merger. The supermassive black hole in the center of 1ES 1959+650 is estimated to be ~ 1.3 × 108 M☉.Ghosal B Tolamatti A Bhattacharyya S Bhatt N Yadav K K Chandra P Das M P Tickoo A K Rannot R C Gaur K K Goyal A Kumar N Marandi P Agarwal N K Kothari M 2022-11-10 Gamma-ray spectral variability of HBL 1ES 1959+650 during MJD 57400–58000 and its consequence on leptonic blazar emission model Monthly Notices of the Royal Astronomical Society 517 4 5473–5482 10.1093/mnras/stac2950 free 0035-8711 1ES 1959+650 is violently variable. It exhibits multiple outburst episodes across its electromagnetic spectrum,Shah Zahir Ezhikode Savithri H Misra Ranjeev Rajalakshmi T R 2021-05-03 AstroSat observation of the HBL 1ES 1959+650 during its October 2017 flaring Monthly Notices of the Royal Astronomical Society 504 4 5485–5495 10.1093/mnras/stab1244 free 0035-8711 2104.13472 Kapanadze Bidzina Dorner Daniela Romano Patrizia Vercellone Stefano Tabagari Lela Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017) The TeV blazar 1ES 1959+650 - a short review 2018-04-20 https://pos.sissa.it/306/033/pdf Trieste, Italy Sissa Medialab 033 10.22323/1.306.0033 free Patel S. R. Shukla A. Chitnis V. R. Dorner D. Mannheim K. Acharya B. S. Nagare B. J. March 2018 Broadband study of blazar 1ES 1959+650 during flaring state in 2016 Astronomy & Astrophysics 611 A44 10.1051/0004-6361/201731987 free 1711.08583 2018A&A...611A..44P 0004-6361 In its low flux state between 2000 and 2001, 1ES 1959+650 was observed with HEGRA Atmospheric Cherenkov Telescope system, which it showed a Crab flux of 5.3%. During its flaring state in May 2002, the blazar's flux level increased significantly as high as 2.2 Crab.Aharonian F. Akhperjanian A. Beilicke M. Bernlöhr K. Börst H.-G. Bojahr H. Bolz O. Coarasa T. Contreras J. L. Cortina J. Denninghoff S. Fonseca M. V. Girma M. Götting N. Heinzelmann G. July 2003 Detection of TeV gamma-rays from the BL Lac 1ES 1959+650 in its low states and during a major outburst in 2002 https://www.aanda.org/articles/aa/pdf/2003/28/aafe161.pdf Astronomy & Astrophysics 406 1 L9–L13 10.1051/0004-6361:20030838 free 2003A&A...406L...9A 0004-6361 Furthermore, an orphan flare, not accompanied by increasing activity in spectral bands, was also shown.Reimer A. Bottcher M. Postnikov S. September 2005 Neutrino Emission in the Hadronic Synchrotron Mirror Model: The "Orphan" TeV Flare from 1ES 1959+650 https://iopscience.iop.org/article/10.1086/431948/fulltext/ The Astrophysical Journal 630 1 186–190 10.1086/431948 astro-ph/0505233 2005ApJ...630..186R 0004-637XReimer A. Böttcher M. Postnikov S. 2005-09-01 Neutrino Emission in the Hadronic Synchrotron Mirror Model: The "Orphan" TeV Flare from 1ES 1959+650 https://iopscience.iop.org/article/10.1086/431948 The Astrophysical Journal en 630 1 186 10.1086/431948 astro-ph/0505233 2005ApJ...630..186R 0004-637XKrawczynski H. Hughes S. B. Horan D. Aharonian F. Aller M. F. Aller H. Boltwood P. Buckley J. Coppi P. Fossati G. Gotting N. Holder J. Horns D. Kurtanidze O. M. Marscher A. P. 2004-01-20 Multiwavelength Observations of Strong Flares from the TeV Blazar 1ES 1959+650 http://dx.doi.org/10.1086/380393 The Astrophysical Journal 601 1 151–164 10.1086/380393 astro-ph/0310158 2004ApJ...601..151K 0004-637X The gamma emission in 1ES 1959+650 displays 'softer-when-brighter' evolution in a 0.1-300 GeV band while the X-ray emission showed 'harder-when-brighter' evolution in a 0.6-10 KeV band. In addition to its variability, 1ES 1959+650 shows gamma ray flares from short to long timescales.Santander Marcos The exceptional TeV flaring activity of the blazar 1ES 1959+650 in 2015 and 2016 as observed with VERITAS 2017-08-16 Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017) Trieste, Italy Sissa Medialab 622 10.22323/1.301.0622 free X-ray flares were also detected in the blazar, apart from gamma ray flares.Kapanadze Bidzina 2017-05-01 Another X-ray Flare in TeV-detected blazar 1ES 1959+650 https://ui.adsabs.harvard.edu/abs/2017ATel10430....1K/abstract The Astronomer's Telegram 10430 1 2017ATel10430....1K Chandra Sunil Boettcher Markus Goswami Pranjupriya Singh Kulinder Pal Zacharias Michael Kaur Navpreet Bhattacharyya Sudip Ganesh Shashikiran Dorner Daniela 2021-09-01 X-Ray Observations of 1ES 1959+650 in Its High-activity State in 2016–2017 with AstroSat and Swift The Astrophysical Journal 918 2 67 10.3847/1538-4357/ac01d1 free 2105.08119 2021ApJ...918...67C 0004-637X Between August 2015 and January 2016, a powerful and prolonged X-ray flare was detected in 1ES 1959+650.Kapanadze B. Dorner D. Vercellone S. Romano P. Kapanadze S. Mdzinarishvili T. 2016-03-28 A recent strong X-ray flaring activity of 1ES 1959+650 with possibly less efficient stochastic acceleration Monthly Notices of the Royal Astronomical Society: Letters 461 1 L26–L31 10.1093/mnrasl/slw054 free 1745-3925 That same year, the second strongest X-ray flare occurred with a 5.5 month interval separation after the first flare.Kapanadze B. Dorner D. Vercellone S. Romano P. Hughes P. Aller M. Aller H. Reynolds M. Kapanadze S. Tabagari L. 2017-09-27 The second strong X-ray flare and multifrequency variability of 1ES 1959+650 in 2016 January–August Monthly Notices of the Royal Astronomical Society 473 2 2542–2564 10.1093/mnras/stx2492 free 0035-8711 The source in 1ES 1959+650 is unresolved on a kiloparsec scale. By looking at a parsec scale, it is found to be dominated by a luminous core. There is also presence of some extended unpolarized emission to the north, which the electric vector position angle is found parallel to it while the core polarization on the other hand, is roughly 1.5 percent. This suggests a component emerging towards north with average polarization of 4 percent.Bondi M. Marchã M. J. M. Polatidis A. Dallacasa D. Stanghellini C. Antón S. July 2004 VLBA polarization observations of BL Lac objects and passive elliptical galaxies Monthly Notices of the Royal Astronomical Society 352 1 112–124 10.1111/j.1365-2966.2004.07903.x free 2004MNRAS.352..112B 0035-8711 References External links 1ES 1959+650 on SIMBAD Category:BL Lacertae objects Category:Draco (constellation) Category:Blazars Category:Active galaxies 2674942 Category:Galaxies discovered in 1987