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Просмотр по автору "Mufakharov T."

Просмотр по автору "Mufakharov T."

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  • A study of the synchrotron component in the blazar spectral energy distributions 
    Mingaliev M.; Sotnikova Y.; Mufakharov T.; Erkenov A.; Udovitskiy R. (2015)
    © Pleiades Publishing, Ltd., 2015. We study the synchrotron component of nonthermal radiation of blazars using the spectral energy distribution (SED). The sample contains a total of 877 blazars, including 423 flat-spectrum ...
  • A Systematic TMRT Observational Study of Galactic <sup>12</sup>C/<sup>13</sup>C Ratios from Formaldehyde 
    Yan Y.; Zhang J.; Henkel C.; Mufakharov T.; Jia L.; Tang X.; Wu Y.; Li J.; Zeng Z.; Wang Y.; Li Y.; Huang J.; Jian J. (2019)
    © 2019. The American Astronomical Society. We present observations of the C-band 110-111 (4.8 GHz) and Ku-band 211-212 (14.5 GHz) K-doublet lines of H2CO and the C-band 110-111 (4.6 GHz) line of H213CO toward a large sample ...
  • Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600 
    Mufakharov T.; Mikhailov A.; Sotnikova Y.; Mingaliev M.; Stolyarov V.; Erkenov A.; Nizhelskij N.; Tsybulev P. (2021)
    We report the first detection at 4.7 and 8.2 GHz with the RATAN-600 radio telescope of the source PSO J047.4478+27.2992, which has been announced as a blazar at z = 6.1. The average flux densities are 12 ± 3 and 8 ± 4 mJy ...
  • Gigahertz-peaked spectrum (GPS) galaxies and quasars 
    Mingaliev M.; Sotnikova Y.; Mufakharov T.; Erkenov A.; Udovitskiy R. (2013)
    The results of a comprehensive analysis of continuous radio spectra of a sample of Gigahertz-Peaked Spectrum (GPS) sources are reported. The sources are selected from a flux-density-complete sample (S ν ≥ 200 mJy at 4.8 ...
  • High-redshift quasars at z ≥ 3 - I. Radio spectra 
    Sotnikova Y.; Mikhailov A.; Mufakharov T.; Mingaliev M.; Bursov N.; Semenova T.; Stolyarov V.; Udovitskiy R.; Kudryashova A.; Erkenov A. (2021)
    We present the radio properties of optically selected quasars with z ≥ 3. The complete sample consists of 102 quasars with a flux density level S1.4 ≥ 100 mJy in a declination range -35° ≤ Dec. ≤ +49°. The observations ...
  • Multi-wavelength observations of the BL Lac object Fermi J1544-0649: One year after its awakening 
    Tam P.H.T.; Pal P.S.; Cui Y.D.; Jiang N.; Sotnikova Y.; Yang C.W.; Wang L.Z.; Tang B.T.; Li Y.B.; Mao J.; Kong A.K.H.; Zhong Z.H.; Ding J.; Mufakharov T.; Fan J.F.; Dou L.M.; Shen R.F.; Ai Y.L. (2020)
    © 2020 Elsevier B.V. We report observations of a transient source Fermi J1544-0649 from radio to γ-rays. Fermi J1544-0649 was discovered by the Fermi-LAT in May 2017. Follow-up Swift-XRT observations revealed three flaring ...
  • Multifrequency quasi-simultaneous observations of six low-synchrotron peaked blazars 
    Mufakharov T.; Sotnikova Y.; Mingaliev M.; Erkenov A. (2015)
    © Pleiades Publishing, Ltd., 2015. We made an estimation of the synchrotron peak frequency (ν<sup>s</sup><inf>peak</inf>) of the spectral energy distribution (SED) for six blazars. These objects were selected as ...
  • Multifrequency Study of GHz-peaked Spectrum Sources 
    Sotnikova Y.; Mufakharov T.; Majorova E.; Mingaliev M.; Udovitskii R.; Bursov N.; Semenova T. (2019)
    © 2019, Pleiades Publishing, Ltd. Gigahertz-Peaked spectrum (GPS) sources are compact active galactic nuclei, presumably young precursors of bright radio sources. The study of GPS radio properties provides information about ...
  • Multifrequency study of gigahertz-peaked spectrum sources with RATAN-600 
    Sotnikova Y.; Mufakharov T.; Mingaliev M.; Mikhailov A. (2021)
    We report the radio continuum properties for several samples of peaked spectrum (PS) radio sources. Broadband spectra of the objects were analyzed using the RATAN-600 six-frequency (1.2–22 GHz) observations and available ...
  • RATAN-600 multi-frequency data for the BL Lacertae objects 
    Mingaliev M.; Sotnikova Y.; Udovitskiy R.; Mufakharov T.; Nieppola E.; Erkenov A. (2014)
    © ESO, 2014. Aims. We present a new catalogue of the RATAN-600 multi-frequency measurements for BL Lac objects. The purpose of this catalogue is to compile the BL Lac multi-frequency data that is acquired with the RATAN-600 ...
  • Simultaneous spectra and radio properties of BL Lacs 
    Mingaliev M.; Sotnikova Y.; Mufakharov T.; Nieppola E.; Tornikoski M.; Tammi J.; Lähteenmäki A.; Udovitskiy R.; Erkenov A. (2017)
    © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim We present the results of 9 years of the blazar observing program at the RATAN-600 radio telescope (2005–2015). The data were obtained at six frequency bands (1.1, 2.3, ...
  • Study of the relation between the jet and accretion-disk emission in Blazars using RATAN-600 multifrequency data 
    Mufakharov T.; Sotnikova Y.; Erkenov A.; Mingaliev M. (2014)
    We study the correlation between the emission from the broad-line region (BLR) and the emission in other wavelength ranges (from radio to x-ray) for the sample of 37 blazars (25 flat-spectrum radio quasars (FSRQs) and 10 ...
  • The observed radio/gamma-ray emission correlation for blazars with the Fermi-LAT and the RATAN-600 data 
    Mufakharov T.; Mingaliev M.; Sotnikova Y.; Naiden Y.; Erkenov A. (2015)
    © 2015 The Authors. We study the correlation between gamma-ray and radio band radiation for 123 blazars, using the Fermi-LAT first source catalogue (1FGL) and the RATAN-600 data obtained at the same period of time (within ...

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