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  • Characterizing Optical Variability of OJ 287 in 2016-2017 
    Gupta A.; Gaur H.; Wiita P.; Pandey A.; Kushwaha P.; Hu S.; Kurtanidze O.; Semkov E.; Damljanovic G.; Goyal A.; Uemura M.; Darriba A.; Chen X.; Vince O.; Gu M.; Zhang Z.; Bachev R.; Chanishvili R.; Itoh R.; Kawabata M.; Kurtanidze S.; Nakaoka T.; Nikolashvili M.; Stawarz; Strigachev A. (2019)
    © 2019. The American Astronomical Society. All rights reserved.. We report on a recent multiband optical photometric and polarimetric observational campaign of the blazar OJ 287 that was carried out during 2016 September-2017 ...
  • DISCOVERY of A HIGHLY POLARIZED OPTICAL MICROFLARE in BLAZAR S5 0716+714 during the 2014 WEBT CAMPAIGN 
    Bhatta G.; Goyal A.; Ostrowski M.; Stawarz; Akitaya H.; Arkharov A.; Bachev R.; Benítez E.; Borman G.; Carosati D.; Cason A.; Damljanovic G.; Dhalla S.; Frasca A.; Hu S.; Itoh R.; Jorstad S.; Jableka D.; Kawabata K.; Klimanov S.; Kurtanidze O.; Larionov V.; Laurence D.; Leto G.; Markowitz A.; Marscher A.; Moody J.; Moritani Y.; Ohlert J.; Di Paola A.; Raiteri C.; Rizzi N.; Sadun A.; Sasada M.; Sergeev S.; Strigachev A.; Takaki K.; Troitsky I.; Ui T.; Villata M.; Vince O.; Webb J.; Yoshida M.; Zola S.; Hiriart D. (2015)
    © 2015. The American Astronomical Society. All rights reserved. The occurrence of low-amplitude flux variations in blazars on hourly timescales, commonly known as microvariability, is still a widely debated subject in ...
  • Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye 
    Wyrzykowski; Mróz P.; Rybicki K.A.; Gromadzki M.; Kołaczkowski Z.; Zieliński M.; Zieliński P.; Britavskiy N.; Gomboc A.; Sokolovsky K.; Hodgkin S.T.; Abe L.; Aldi G.F.; Almannaei A.; Altavilla G.; Al Qasim A.; Anupama G.C.; Awiphan S.; Bachelet E.; Baklş V.; Baker S.; Bartlett S.; Bendjoya P.; Benson K.; Bikmaev I.F.; Birenbaum G.; Blagorodnova N.; Blanco-Cuaresma S.; Boeva S.; Bonanos A.Z.; Bozza V.; Bramich D.M.; Bruni I.; Burenin R.A.; Burgaz U.; Butterley T.; Caines H.E.; Caton D.B.; Calchi Novati S.; Carrasco J.M.; Cassan A.; Epas V.; Cropper M.; Chruślińska M.; Clementini G.; Clerici A.; Conti D.; Conti M.; Cross S.; Cusano F.; Damljanovic G.; Dapergolas A.; D'Ago G.; De Bruijne J.H.J.; Dennefeld M.; Dhillon V.S.; Dominik M.; Dziedzic J.; Erece O.; Eselevich M.V.; Esenoglu H.; Eyer L.; Figuera Jaimes R.; Fossey S.J.; Galeev A.I.; Grebenev S.A.; Gupta A.C.; Gutaev A.G.; Hallakoun N.; Hamanowicz A.; Han C.; Handzlik B.; Haislip J.B.; Hanlon L.; Hardy L.K.; Harrison D.L.; Van Heerden H.J.; Hoette V.L.; Horne K.; Hudec R.; Hundertmark M.; Ihanec N.; Irtuganov E.N.; Itoh R.; Iwanek P.; Jovanovic M.D.; Janulis R.; Jelínek M.; Jensen E.; Kaczmarek Z.; Katz D.; Khamitov I.M.; Kilic Y.; Klencki J.; Kolb U.; Kopacki G.; Kouprianov V.V.; Kruszyńska K.; Kurowski S.; Latev G. (2020)
    © ESO 2020. Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the Gaia space mission. Its light ...
  • Multiband optical variability of the blazar OJ 287 during its outbursts in 2015-2016 
    Gupta A.; Agarwal A.; Mishra A.; Gaur H.; Wiita P.; Gu M.; Kurtanidze O.; Damljanovic G.; Uemura M.; Semkov E.; Strigachev A.; Bachev R.; Vince O.; Zhang Z.; Villarroel B.; Kushwaha P.; Pandey A.; Abe T.; Chanishvili R.; Chigladze R.; Fan J.; Hirochi J.; Itoh R.; Kanda Y.; Kawabata M.; Kimeridze G.; Kurtanidze S.; Latev G.; Muñoz Dimitrova R.; Nakaoka T.; Nikolashvili M.; Shiki K.; Sigua L.; Spassov B. (2017)
    © 2016 The Authors.We present recent optical photometric observations of the blazar OJ 287 taken during 2015 September-2016 May. Our intense observations of the blazar started in 2015 November and continued until 2016 May ...
  • MULTIFREQUENCY PHOTO-POLARIMETRIC WEBT OBSERVATION CAMPAIGN on the BLAZAR S5 0716+714: SOURCE MICROVARIABILITY and SEARCH for CHARACTERISTIC TIMESCALES 
    Bhatta G.; Stawarz; Ostrowski M.; Markowitz A.; Akitaya H.; Arkharov A.; Bachev R.; Benítez E.; Borman G.; Carosati D.; Cason A.; Chanishvili R.; Damljanovic G.; Dhalla S.; Frasca A.; Hiriart D.; Hu S.; Itoh R.; Jableka D.; Jorstad S.; Jovanovic M.; Kawabata K.; Klimanov S.; Kurtanidze O.; Larionov V.; Laurence D.; Leto G.; Marscher A.; Moody J.; Moritani Y.; Ohlert J.; Paola A.; Raiteri C.; Rizzi N.; Sadun A.; Sasada M.; Sergeev S.; Strigachev A.; Takaki K.; Troitsky I.; Ui T.; Villata M.; Vince O.; Webb J.; Yoshida M.; Zola S. (2016)
    © 2016. The American Astronomical Society. All rights reserved..Here we report on the results of the Whole Earth Blazar Telescope photo-polarimetric campaign targeting the blazar S5 0716+71, organized in 2014 March to ...
  • Multiwavelength temporal and spectral variability of the blazar OJ 287 during and after the 2015 December flare: A major accretion disc contribution 
    Hirochi J.; Itoh R.; Kawabata M.; Kopatskaya E.; Kurtanidze S.; Larionova E.; Larionova L.; Mishra A.; Morozova D.; Nakaoka T.; Nikolashvili M.; Savchenko S.; Troitskaya Y.; Troitsky I.; Vasilyev A. (2018)
    © 2018 The Author(s). We present a multiwavelength spectral and temporal analysis of the blazar OJ 287 during its recent activity between 2015 December and 2016 May, showing strong variability in the nearinfrared (NIR) to ...
  • Polarization angle swings in blazars: The case of 3C 279 
    Kiehlmann S.; Savolainen T.; Jorstad S.; Sokolovsky K.; Schinzel F.; Marscher A.; Larionov V.; Agudo I.; Akitaya H.; Benítez E.; Berdyugin A.; Blinov D.; Bochkarev N.; Borman G.; Burenkov A.; Casadio C.; Doroshenko V.; Efimova N.; Fukazawa Y.; Gómez J.; Grishina T.; Hagen-Thorn V.; Heidt J.; Hiriart D.; Itoh R.; Joshi M.; Kawabata K.; Kimeridze G.; Kopatskaya E.; Korobtsev I.; Krajci T.; Kurtanidze O.; Kurtanidze S.; Larionova E.; Larionova L.; Lindfors E.; López J.; McHardy I.; Molina S.; Moritani Y.; Morozova D.; Nazarov S.; Nikolashvili M.; Nilsson K.; Pulatova N.; Reinthal R.; Sadun A.; Sasada M.; Savchenko S.; Sergeev S.; Sigua L.; Smith P.; Sorcia M.; Spiridonova O.; Takaki K.; Takalo L.; Taylor B.; Troitsky I.; Uemura M.; Ugolkova L.; Ui T.; Yoshida M.; Zensus J.; Zhdanova V. (2016)
    © ESO, 2016.Context. Over the past few years, on several occasions, large, continuous rotations of the electric vector position angle (EVPA) of linearly polarized optical emission from blazars have been reported. These ...
  • The ever-surprising blazar OJ 287: Multiwavelength study and appearance of a new component in X-rays 
    Kushwaha P.; Gupta A.; Wiita P.; Pal M.; Gaur H.; Dal Pino E.; Kurtanidze O.; Semkov E.; Damljanovic G.; Hu S.; Uemura M.; Vince O.; Darriba A.; Gu M.; Bachev R.; Chen X.; Itoh R.; Kawabata M.; Kurtanidze S.; Nakaoka T.; Nikolashvili M.; Sigua L.; Strigachev A.; Zhang Z. (2018)
    © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a multiwavelength spectral and temporal investigation of OJ 287 emission during its strong optical-to-X-ray ...

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