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  • A Proton Precession Magnetometer 
    Bhargava, B. N; Kasiviswanathan, G. A (Indian Meteorological Department, 1966)
    A simple portable proton precession magnetometer designed and constructed for Kodaikanal Observatory is described. Except for the signal amplifier, the instrument is transistorized. The accuracy of measurement of absolute ...
  • The proton synchrotron model of TeV gamma ray bursts and their detectability by AMANDA/ICECUBE type detectors 
    Bhattacharjee, P; Gupta, N (Elsevier, 2003-11)
    The detectability of a possible ``high'' energy (>100 GeV) component of gamma ray bursts (GRBs) using AMANDA/ICECUBE large area muon detectors is examined within the context of a specific model of such high energy gamma ...
  • Protoplanetary disks in Ks-band total intensity and polarized light 
    Ren, Bin B; Benisty, Myriam; Ginski, Christian; Tazaki, Ryo; Wallack, Nicole L; Milli, Julien; Garuf, Antonio; Bae, Jaehan; Facchini, Stefano; Menard, Francois; Pinilla, Paola; Swastik, C; Teague, Richard; Wahhaj, Zahed (EDP Sciences, 2023-12)
    Context. The diverse morphology among protoplanetary disks may result from planet-disk interactions, suggesting the presence of planets undergoing formation. The characterization of disks can provide information on the ...
  • Prototype for pulsar observations at low radio frequencies using log-periodic dipole antennas 
    Bane Kshitij, Suhas Trupti; Barve, Indrajit V; Gireesh, G. V. S; Kathiravan, C; Ramesh, R (SPIE-The International Society for Optical Engineering, 2022-01)
    A prototype for dedicated observations of pulsars and other astrophysical transients in the frequency range of 50 to 80 MHz has been recently commissioned in the Gauribidanur Radio Observatory near Bangalore in India. ...
  • Prototype segmented mirror telescope: a pathfinder of India's large optical-NIR telescope project 
    Parihar, P; Prasanna, Deshmukh; Jacob, A; Varun, Kumar; Goudar, Abhishek; Sriram, S; Nagabhusan, S; Amit Kumar, S; Govinda, K. V.; Sandeep, D. S.; Kemkar, P. M. M; Anupama, G. C (SPIE--The International Society for Optical Engineering, 2018-07)
    To cater the need of growing astronomical community of India, there is a proposal to install 10-12m size optical-NIR telescope, equipped with state of the art back-end instruments . A telescope of this size is possible ...
  • Prototype tracking system for observing the Sun at decimeter and meter wavelengths 
    Saraswathi Kalyani, S (Indian Institute of Astrophysics, 2020-07)
    The outer atmosphere of the Sun is understood to be a very hot plasma medium. The frequency of the electromagnetic emission from a hot plasma medium depends on its electron density distribution. Since the electron density ...
  • Prototype tracking system for observing the Sun at decimeter and meter wavelengths 
    Sayuf, Shaik (Indian Institute of Astrophysics, 2021-07)
    The outer atmosphere of the Sun is observed to be a very hot plasma medium. Since the frequency of electromagnetic wave emission from a plasma medium depends on the electron number density, high frequency radio waves ...
  • Pulsar observations above 1 GeV with future ground-based gamma-ray telescopes 
    de Jager, O. C (Astronomical Society of India, 2002)
    This paper explores the potential of present and future ground based gamma-ray telescopes to detect GeV to multi-GeV pulsed emission from EGRET pulsars. Five types of telescopes can in principle detect such emission: The ...
  • Pulsar observations at 150 MHz with Mauritius Radio Telescope - Preliminary results 
    Issur, N. H (Astronomical Society of India, 1997)
    The Mauritius Radio Telescope (MRT) has been used to observe some Southern Hemisphere pulsars at 151.6 MHz. A tracking system allowing observation of a source for 8 x sec (δ) minutes of time and a Fast Data Acquisition ...
  • Pulsar Radio Emission Altitude from Curvature Radiation 
    Gangadhara, R. T (The University of Chicago Press, 2004-07-01)
    We assume that relativistic sources moving along dipolar magnetic field lines emit curvature radiation. The beamed emission occurs in the direction of tangents to the field lines, and to receive it, the sight line must ...
  • The pulsar radio emission and polarization 
    Roy, Tridib (Indian Institute of Astrophysics, 2020-06)
    The thesis is mainly focused on the modeling of pulsar radio emission and polarization. The radio emission mechanism of pulsar is not fully understood, because of the lack of understanding about the kinematical processes ...
  • Pulsar radio emission geometry 
    Gangadhara, R. T (Springer Netherlands, 2008)
    Pulsar radio emission is belived to come from relativistic plasma accelerated along the dipolar magnetic field lines in pulsar magnetosphere. The beamed emission by relativistic sources occur in the direction of tangents ...
  • Pulsar scintillation and the local interstellar medium 
    Bhat, N. D. R (Astronomical Society of India, 2000)
    Ever since their discovery, pulsars have been proved to be excellent tools to study the Interstellar Medium. Results from new observations using the Ooty Radio Telescope at 327 MHz are used to investigate the properties ...
  • Pulsar work with the upgraded Ooty radio telescope 
    Vivekanand, M (Astronomical Society of India, 1993)
    In 1992 Ooty Radio Telescope (ORT) was fitted with a pre-amplifier for each of its 1056 dipoles; this enhanced its sensitivity by at least a factor of three. A digital hardware was installed for setting ORT's declination ...
  • Pulsars 
    Ter, Harr, D (Astronomical Society of India, 1979-09)
    We give a brief account of various observational data about pulsars, of some of the conclusions one can derive from these data, about the nature of the pulsars, and in particular, of the properties of the binary pulsar PSR ...
  • Pulsars and binary stars 
    Shukre, C. S (Astronomical Society of India, 1990)
    After brief introductions to the evolution of close binary systems, pulsars, and X-ray binaries, the evolution of the study of these systems is examined and the present state of understanding is addressed. The impact of ...
  • Pulsating radio emission at decametre wavelengths from the sun 
    Sastry, Ch. V; Krishan, V; Subramanian, K. R (Indian Academy of Sciences, 1981-03)
    Observations on the pulsation pattern in the time profile of short duration solar radio bursts at decametre wavelengths are presented. The pulsations are found to be present predominantly in the saturation phase of the ...
  • Pulsating Soft Components in the Accreting X-ray Pulsars LMC X-4 and SMC X-1 
    Naik, S; Paul, B (Astronomical Society of India, 2003)
    We report here spectral study of two accreting binary X-ray pulsars LMC X-4 and SMC X1 made with the Beppo-SAX observatory. The energy spectrum of both the pulsars in 0.1-10.0 keV band can be described by a model consisting ...
  • The pulsation theory of Cepheid variables 
    Evershed, John (Taylor and Francis, 1919)
  • Pulse profiles of binary X-ray pulsars in 20-200 keV band 
    Manchanda, R. K (Astronomical Society of India, 2001)
    Hard X-ray observations of the binary X-ray pulsars were made using a balloon-borne large area scintillation counter telescope in the 20-200 keV band. Apart from many other galactic and extragalactic X-ray sources, three ...

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