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Просмотр по автору "Gupta A."

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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 ...
  • Cytokine, chemokine, and metalloprotease activation in the serum of patients with nephropathia epidemica from the republic of tatarstan and the republic of mordovia, Russia 
    Martynova E.; Davidyuk Y.; Kabwe E.; Garanina E.E.; Shakirova V.; Pavelkina V.; Uskova Y.; Stott R.J.; Foster T.L.; Markelova M.; Goyal M.; Gupta A.; Bhola M.; Kumar V.; Baranwal M.; Rizvanov A.A.; Khaiboullina S.F. (2021)
    Nephropathia Epidemica (NE), endemic to several Volga regions of Russia, including the Republic of Tatarstan (RT) and the Republic of Mordovia (RM), is a mild form of hemorrhagic fever with renal syndrome caused by infection ...
  • FMR investigations of half-metallic ferromagnets 
    Rameev B.; Yildiz F.; Kazan S.; Aktas B.; Gupta A.; Tagirov L.; Rata D.; Buergler D.; Gruenberg P.; Schneider C.; Kämmerer S.; Reiss G.; Hütten A. (2006)
    Thin films of various half-metallic ferromagnets, such as chromium dioxide (CrO 2) and Heusler alloys (Co 2Cr 0.6Fe 0.4Al, Co 2MnSi) have been investigated by ferromagnetic resonance (FMR) technique. It is demonstrated ...
  • FMR studies of CrO2 epitaxial thin films 
    Rameev B.; Yilgin R.; Aktaş B.; Gupta A.; Tagirov L. (2003)
    Epitaxial (100) thin films of CrO2 of various thickness were fabricated by chemical vapor deposition (CVD) at atmospheric oxygen pressure onto (100) TiO2 single-crystal substrates. Ferromagnetic resonance (FMR) measurements ...
  • FMR study of strain-induced magnetic anisotropies in CrO2 thin films 
    Rameev B.; Gupta A.; Miao G.; Xiao G.; Yildiz F.; Tagirov L.; Akteş B. (2004)
    Epitaxial CrO2 thin films were grown on TiO2 (100) single-crystalline substrates by chemical vapour deposition (CVD) process with use of CrO3 solid precursor. The films with different thickness (27-530 nm) were studied by ...
  • 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 ...
  • Optical and radio variability of BL Lacertae 
    Gaur H.; Gupta A.; Bachev R.; Strigachev A.; Semkov E.; Wiita P.; Volvach A.; Gu M.; Agarwal A.; Agudo I.; Aller M.; Aller H.; Kurtanidze O.; Kurtanidze S.; Lähteenmäki A.; Peneva S.; Nikolashvili M.; Sigua L.; Tornikoski M.; Volvach L. (2015)
    © ESO, 2015. Context. We extensively observed the prototype blazar, BL Lacertae, in optical and radio bands during an active phase in the period 2010-2013 when the source showed several prominent outbursts. We searched for ...
  • Strain-induced magnetic anisotropies in epitaxial CrO2 thin films probed by FMR technique 
    Rameev B.; Gupta A.; Yildiz F.; Tagirov L.; Aktaş B. (2006)
    Epitaxial CrO2 thin films were grown onto TiO2 (1 0 0) single-crystalline substrates by chemical vapour deposition (CVD) process with use of the solid precursor CrO3. The CrO2 films with thickness of 27 and 65 nm were ...
  • The 72-h WEBT microvariability observation of blazar S5 0716 + 714 in 2009 
    Bhatta G.; Webb J.; Hollingsworth H.; Dhalla S.; Khanuja A.; Bachev R.; Blinov D.; Bottcher M.; Bravo Calle O.; Calcidese P.; Capezzali D.; Carosati D.; Chigladze R.; Collins A.; Coloma J.; Efimov Y.; Gupta A.; Hu S.; Kurtanidze O.; Lamerato A.; Larionov V.; Lee C.; Lindfors E.; Murphy B.; Nilsson K.; Ohlert J.; Oksanen A.; Pääkkönen P.; Pollock J.; Rani B.; Reinthal R.; Rodriguez D.; Ros J.; Roustazadeh P.; Sagar R.; Sanchez A.; Shastri P.; Sillanpää A.; Strigachev A.; Takalo L.; Vennes S.; Villata M.; Villforth C.; Wu J.; Zhou X. (2013)
    Context. The international Whole Earth Blazar Telescope (WEBT) consortium planned and carried out three days of intensive micro-variability observations of S5 0716 + 714 from February 22, 2009 to February 25, 2009. This ...
  • 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 ...
  • The magnetic anisotropy of thin epitaxial CrO2 films studied by ferromagnetic resonance 
    Rameev B.; Gupta A.; Miao G.; Xiao G.; Yildiz F.; Tagirov L.; Aktaş B. (2005)
    The magnetic anisotropy of thin epitaxial films of chromium dioxide (CrO2) has been studied as a function of the film thickness by the ferromagnetic resonance (FMR) technique. CrO2 films with various thicknesses in the ...

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