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Browsing by Author "Janardhan, P"

Browsing by Author "Janardhan, P"

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  • Amplitude of solar wind density turbulence from 10 to 45 R⊙ 
    Sasikumar Raja, K; Ingale, M; Ramesh, R; Subramanian, P; Manoharan, P. K; Janardhan, P (American Geophysical Union, 2016-12)
    We report on the amplitude of the density turbulence spectrum ( urn:x-wiley:jgra:media:jgra53108:jgra53108-math-0001) and the density modulation index (δN/N) in the solar wind between 10 and 45R⊙. We derive these quantities ...
  • Detection and tracking of IP disturbances using interplanetary scintillation 
    Balasubramanian, V; Srivatsan, R; Janardhan, P; Ananthakrishnan, S (Astronomical Society of India, 1998)
    A well known method of probing large portions of the interplanetary medium (IPM) is by observations of interplanetary scintillations of a large number of spatially well-distributed compact extragalactic radio sources at ...
  • IPS observations of the solar wind at 327 MHz - A comparison with ULYSSES observations 
    Janardhan, P; Balasubramanian, V; Ananthakrishnan, S; Srivatsan, R (Astronomical Society of India, 1996)
    Extensive IPS observations at 327 MHz using the Ooty Radio Telescope (ORT) are presented. The observations spanning two and a half years starting in September 1992 covered two important periods during the Ulysses south ...
  • IPS survey at 327 MHz for detection of compact radio sources 
    Balasubramanian, V; Janardhan, P; Ananthakrishnan, S; Manoharan, P. K (Astronomical Society of India, 1993)
    In early 1992 a new feed was installed along the focal line of the 530 m long and 30 m wide parabolic cylinder reflector of the Ooty Radio Telescope (ORT). The new feed consisting of 1056 GaAsFET low noise amplifiers, one ...
  • J1216+0709: A Radio Galaxy with Three Episodes of AGN Jet Activity 
    Veeresh, Singh; Ishwara-Chandra, C. H; Kharb, P; Srivastava, S; Janardhan, P (IOP Publishing, 2016-08-01)
    We report the discovery of a "triple-double radio galaxy," J1216+0709, detected in deep low-frequency Giant Metrewave Radio Telescope (GMRT) observations. J1216+0709 is only the third radio galaxy, after B0925+420 and ...
  • Measurements of compact radio source size and structure of cometary ion tails using interplanetary scintillation at 103 MHz 
    Janardhan, P (Astronomical Society of India, 1993)
    The work contained in this thesis was carried out at the Physical Research Laboratory, Ahmedabad and describes observations of Interplanetary Scintillation (IPS), carried out since 1984, using a large 10,000 sq m dipole ...
  • Observations of PSR 0950 + 08 at 103 MHz 
    Deshpande, M. R; Vats, Hari Om; Janardhan, P; Bobra, A. D (Astronomical Society of India, 1993)
    n this article we report the possible cause of an enormously large enhancement (burst) in the ratio flux of PSR 0950 + 08. The burst was observed by two radio telescopes at Rajkot and Thaltej separated by 20 km. Simple ...
  • On the nature of compact components of radio sources at 327 MHz 
    Balasubramanian, V; Janardhan, P; Ananthakrishnan, S; Srivatsan, R (Astronomical Society of India, 1996)
    The interplanetary scintillation (IPS) survey of about 5000 radio sources carried out during 1992-93 with the Ooty Radio Telescope (ORT) at 327 MHz has resulted in the detection of compact components in about 2700 sources. ...
  • Terrestrial effects of PSR 0950 + 08 (Paper 2) 
    Vats, Hari Om; Chandra, H; Deshpande, M. R; Janardhan, P; Vyas, G. D (Astronomical Society of India, 1993)
    This article presents indirect evidence that on July 29, 1992 PSR 0950 + 08 emitted a burst of X-ray emissions along with the enhanced radio pulses. This indirect evidence is seen in the form of excess absorption of HF ...

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