Browsing by Author "Ojha, Roopesh"

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    • Interstellar scintillation, ISS, and intrinsic variability of radio AGN 
      Jauncey, David L.; Koay, Jun Yi; Bignall, Hayley; Macquart, Jean-Pierre; Pursimo, Tapio; Giroletti, Marcello; Hovatta, Talvikki; Kiehlmann, Sebastian; Rickett, Barney; Readhead, Anthony C. S.; Max-Moerbeck, Walter; Vedantham, Harish; Reynolds, Cormac; Lovell, James; Ojha, Roopesh; Kedziora Chudczer, Lucyna (Elsevier, 2020)
      We investigate the relationship between the 5 GHz interstellar scintillation (ISS) and the 15 GHz intrinsic variability of the compact, radio-selected active galactic nuclei (AGN) common to the Microarcsecond Scintillation-Induced ...
    • Multiwavelength variability power spectrum analysis of the blazars 3C 279 and PKS 1510–089 on multiple timescales 
      Goyal, Arti; Soida, Marian; Stawarz, Lukasz; Wiita, Paul J.; Nilsson, Kari; Jorstad, Svetlana; Marscher, Alan P.; Aller, Margo F.; Aller, Hugh D.; Lähteenmäki, Anne; Hovatta, Talvikki; Zoła, Staszek; Nalewajko, Krzysztof; Tornikoski, Merja; Tammi, Joni; Hodges, Mark; Kiehlmann, Sebastian; Readhead, Anthony C. S.; Max-Moerbeck Astudillo, Walter Kennerth; Lindfors, Elina; Ramazani, Vandad Fallah; Reichart, D. E.; Caton, D. B.; Valverde, Janeth; Horan, Deirdre; Ojha, Roopesh; Van Zyl, Pfesesani (IOP, 2022)
      We present the results of variability power spectral density (PSD) analysis using multiwavelength radio to GeV gamma-ray light curves covering timescales of decades/years to days/minutes for the blazars 3C 279 and PKS ...