HAGAR Papers


  1. Cherenkov photon density fluctuations in extensive air showers
    V. R. Chitnis and P. N. Bhat

    Astroparticle Physics, 9, 45-63, 1998.

  2. Simulation studies on arrival time distributions of Cherenkov photons in extensive air showers
    V. R. Chitnis and P. N. Bhat

    Astroparticle Physics, 12, 45-64, 1999.

  3. Possible discrimination between gamma ray and hadron initiated showers based on Cherenkov photon arrival time measurements
    V. R. Chitnis and P. N. Bhat

    Astroparticle Physics, 15, 29, 2001.

  4. Gamma ray and hadron generated Cherenkov photon spectra at various observation altitudes
    M. A. Rahman, P. N. Bhat, B. S. Acharya, V. R. Chitnis, P. Majumdar and P. R. Vishwanath

    Experimental Astronomy, 11, 113, 2001.

  5. Gamma-Hadron Separation using Cherenkov Photon Density Fluctuations
    V. R. Chitnis and P. N. Bhat

    Experimental Astronomy, 13, 77, 2002.

  6. Angular Resolution of the Pachmarhi Array of Cherenkov Telescopes
    P. Majumdar, P. N. Bhat, B. S. Acharya, V. R. Chitnis, M. A. Rahman, B. B. Singh and P. R. Vishwanath

    Astroparticle Physics, 18, 333, 2003.

  7. Observations of AGNs using PACT
    D. Bose, V. R. Chitnis, P. R. Vishwanath, P. Majumdar, M. A. Rahman, B. B. Singh, A. C. Gupta, B. S. Acharya

    Astrophysics and Space Science, vol. 309, 111-117, 2007.

  8. Simultaneous multi-wavelength observations of the TeV Blazar Mrk 421 during February - March 2003: X-ray and NIR correlated variability
    A. C. Gupta, B. S. Acharya, D. Bose, V. R. Chitnis, J. H. Fan

    Chinese Journal of Astronomy and Astrophysics, vol. 8, 395-403, 2008.

  9. X-ray variability of AGNs in the soft and the hard X-ray bands
    V. R. Chitnis, J. K. Pendharkar, D. Bose, V. K. Agrawal, A. R. Rao, R. Misra

    The Astrophysical Journal, vol. 698, 1207-1220, 2009.

  10. Search for TeV gamma-rays from Geminga pulsar
    B. B. Singh, V. R. Chitnis, D. Bose, M. A. Rahman, S. S. Upadhya, K. S. Gothe, Nagesh B.K, P. N. Purohit, Shobha K. Rao, Kamesh K. Rao, S. K. Sharma, P. V. Sudersan, B. L. Venkateshmurthy, P. R. Vishwanath, B. S. Acharya

    Astroparticle Physics, vol. 32, 120-128, 2009.

  11. Observations with the High Altitude GAmma-Ray (HAGAR) telescope array in the Indian Himalayas
    R. J. Britto, B. S. Acharya, G. C. Anupama, N. Bhatt, P. Bhattacharjee, S. Bhattacharya, V. R. Chitnis, R. Cowsik, N. Dorji, S. K. Duhan, K. S. Gothe, P. U. Kamath, R. Koul, J. Manoharan, P. K. Mahesh, A. Mitra, B. K. Nagesh, N. K. Parmar, T. P. Prabhu, R. C. Rannot, S. K. Rao, L. Saha, F. Saleem, A. K. Saxena, S. K. Sharma, A. Shukla, B. B. Singh, R. Srinivasan, G. Srinivasulu, P. V. Sudersanan, A. K. Tickoo, D. Tsewang, S. S. Upadhya, P. R. Vishwanath, K. K. Yadav

    Astrophysics and Space Sciences Transactions, 7, 501, 2011.

  12. Multiwavelength study of the TeV blazar Mrk 421 during a giant flare
    A. Shukla, V. R. Chitnis, P. R. Vishwanath, B. S. Acharya, G. C. Anupama, P. Bhattacharjee, R. J. Britto, T. P. Prabhu, L. Saha, B. B. Singh

    Astronomy & Astrophysics, 541, A140, 2012.

  13. Microcontroller based Low dc Voltage Monitoring and Data Logging System
    Sandeep K. Duhan, B.K. Nagesh, S.S. Upadhya and B.S. Acharya

    Journal of Instrument Society of India, 42, 13, 2012.

  14. Introducing the CTA concept
    B. S. Acharya + 976 authors

    Astroparticle Physics, 43, 3, 2012.

  15. Pointing of HAGAR telescope mirrors
    K. S. Gothe, T. P. Prabhu, P. R. Vishwanath, B. S. Acharya, R. Srinivasan, V. R. Chitnis, P. U. Kamath, G. Srinivasulu, F. Saleem, P. M. M. Kemkar, P. K. Mahesh, F Gabriel, J. Manoharan, N. Dorji, T. Dorjai, D. Angchuk, A. I. D'souza, S. K. Duhan, B. K. Nagesh, S. K. Rao, S. K. Sharma, B. B. Singh, P. V. Sudersanan, M. Tashi Thsering, S. S. Upadhya, G. C. Anupama, R. J. Britto, R. Cowsik, L. Saha, A. Shukla

    Experimental Astronomy, 35, 489, 2012.

  16. A study of the performance parameters of the High Altitude Gamma Ray (HAGAR) telescope system at Ladakh in India
    L. Saha, V. R. Chitnis, P. R. Vishwanath, S. Kale, A. Shukla, B. S. Acharya, G. C. Anupama, P. Bhattacharjee, R. J. Britto, T. P. Prabhu, B. B. Singh

    Astroparticle Physics, 42, 33, 2013.

  17. Estimation of the Extragalactic Background Light Using TeV Observations of BL Lac Objects
    Atreyee Sinha, S. Sahayanathan, R. Misra, S. Godambe, B. S. Acharya

    The Astrophysical Journal, 795, 7, 2014.

  18. The Cherenkov Telescope Array potential for the study of young supernova remnants
    B. S. Acharya, C. Aramo, A. Babic et al

    Astroparticle Physics, 62, 152, 2015.

  19. Multi-frequency, Multi-epoch Study of Mrk 501: Hints for a Two-component Nature of the Emission
    A. Shukla, V. R. Chitnis, B. B. Singh, B. S. Acharya, G. C. Anupama, P. Bhattacharjee, R. J. Britto, K. Mannheim, T. P. Prabhu, L. Saha, P. R. Vishwanath

    The Astrophysical Journal, 708, id2, 2015.

  20. Underlying particle spectrum of Mkn 421 during the huge X-ray flare in April 2013
    A. Sinha, A. Shukla, R. Misra, V. R. Chitnis, A. R. Rao, B. S. Acharya

    Astronomy & Astrophysics, 580, A100, 2015.

  21. Lateral density and arrival time distributions of Cherenkov photons in extensive air showers: A simulation study
    P. Hazarika, U. D. Goswami, V. R. Chitnis, B. S. Acharya, G. S. Das, B. B. Singh, R. J. Britto

    Astroparticle Physics, 68, 16, 2015.

  22. Long-term study of Mkn 421 with the HAGAR Array of Telescopes
    A. Sinha, A. Shukla, L. Saha, B. S. Acharya, G. C. Anupama, P. Bhattacharjee, R. J. Britto, V. R. Chitnis, T. P. Prabhu, B. B. Singh, P. R. Vishwanath

    Astronomy & Astrophysics, vol. 591, A83, 2016.

  23. The Multi-wavelength Characteristics of the TeV Binary LSI+61 303
    L. Saha, V. R. Chitnis, A. Shukla, A. R. Rao, B. S. Acharya

    Astrophysical Journal, vol. 823, 134, 2016.

  24. Detection of very hard γ-ray spectrum from the TeV blazar Mrk 501
    A. Shukla, K. Mannheim, V. R. Chitnis, J. Roy, B. S. Acharya, D. Dorner, G. Hughes and A. Biland

    The Astrophysical Journal, vol. 832, 177, 2016.

  25. On the Spectral Curvature of VHE blazar 1ES 1011+496: Effect of Spatial Particle Diffusion
    A. Sinha, S. Sahayanathan, B. S. Acharya, G. C. Anupama, V. R. Chitnis and B. B. Singh

    The Astrophysical Journal, vol. 836, 83, 2017.

 

 

 

 

HAGAR Group: TIFR ,Room No:- C115,D307,C123,C125,D414,Homi Bhabha Road,Colaba,Mumbai, (India)
Phone : 022-22782675 Email : mano.ranjan@tifr.res.in

Developed by : Mano Ranjan,Scientific Assistant(B),DHEP