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Dive into the research topics where Bobby Samir Acharya is active.

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Featured researches published by Bobby Samir Acharya.


High Energy Gamma−Ray Astronomy | 2008

A summary of recent TeV gamma ray observations at Pachmarhi

Bobby Samir Acharya; P. N. Bhat; V. N. Gandhi; P. V. Ramana Murthy; G. P. Sathyanarayana; P. R. Vishwanath

The Atmospheric {hacek C}erenkov array located at Pachmarhi consists of four quasi-independent telescopes located at the four corners of a 80m{times}100m rectangle. Seven sources have been observed during the period October, 1989 to May, 1990. These are: PSR0355+54 (for 83.1 hrs), Crab (59.7 hr), Her X-1 (42.2 hrs), PSR1957+20 (10.0 hrs), PSR1744-24 (34.0 hrs), 4U0115+63 (30.6 hrs) and CTB 80 (7.4 hrs). All or most of the data on the first four objects has been analysed for pulsed emission of TeV gamma rays. None of the four objects seem to be emitting any pulsed gamma rays. Upper limits to the fluxes and detection thresholds are given in each case.


Astronomy and Astrophysics | 1992

Another TeV gamma-ray burst from the Crab pulsar

Bobby Samir Acharya; P. N. Bhat; V. N. Gandhi; P. V. Ramana Murthy; G. P. Sathyanarayana; P. R. Vishwanath


Archive | 2005

Very High Energy gamma rays from Geminga Pulsar

P. R. Vishwanath; Bobby Samir Acharya; P. N. Mari Bhat; V. R. Chitnis


Bulletin of the Astronomical Society of India | 2002

Auxiliary control systems for Pachmarhi array of Cverenkov telescopes

K. S. Gothe; Bobby Samir Acharya; P. N. Mari Bhat; V. R. Chitnis; A. I. D'Souza; Paul J. Francis; Alexander V. St. John; Shashidhar Joshi; Pushan Majumdar; B. K. Nagesh; M. S. Pose; P. N. Purohit; M. A. Rahman; Kamesh K. Rao; Shobha K. Rao; S. K. Sharma; B. B. Singh; A. J. Stanislaus; P. V. Sudershanan; S. S. Upadhya; B. L. Venkateshmurthy; P. R. Vishwanath


Bulletin of the Astronomical Society of India | 2002

Performance studies of the PACT experiment

P. R. Vishwanath; Bobby Samir Acharya; P. N. Mari Bhat; V. R. Chitnis; Pushan Majumdar; M. A. Rahman; B. B. Singh


Bulletin of the Astronomical Society of India | 2002

TeV Gamma-ray flares from Mkn 421 detected by the pachmarhi array of Cverenkov Telescopes

P. N. Mari Bhat; Bobby Samir Acharya; V. R. Chitnis; Pushan Majumdar; M. A. Rahman; B. B. Singh; P. R. Vishwanath


Bulletin of the Astronomical Society of India | 2002

Distributed data acquisition system for Pachmarhi array of Cverenkov telescopes

S. S. Upadhya; Bobby Samir Acharya; P. N. Mari Bhat; V. R. Chitnis; A. I. D'Souza; Paul J. Francis; K. S. Gothe; Shashidhar Joshi; Pushan Majumdar; M. Manogaran; B. K. Nagesh; M. S. Pose; P. N. Purohit; M. A. Rahman; Kamesh K. Rao; Shobha K. Rao; S. K. Sharma; B. B. Singh; A. J. Stanislaus; P. V. Sudersanan; B. L. Venkatesh Murthy; P. R. Vishwanath


Bulletin of the Astronomical Society of India | 2002

Gamma ray and hadron generated Cverenkov photon spectra at various observation altitudes

M. A. Rahman; P. N. Mari Bhat; Bobby Samir Acharya; V. R. Chitnis; Pushan Majumdar; P. R. Vishwanath


Archive | 2001

VHE gamma rays from the Crab Nebula from the PACT Array

P. R. Vishwanath; Bobby Samir Acharya; P. N. Mari Bhat; V. R. Chitnis; Pushan Majumdar; M. A. Rahman; B. B. Singh


Archive | 2001

VHE gamma rays from Crab and Geminga Pulsars

P. R. Vishwanath; Bobby Samir Acharya; P. N. Mari Bhat; V. R. Chitnis; Pushan Majumdar; M. A. Rahman; B. B. Singh

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V. R. Chitnis

Tata Institute of Fundamental Research

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B. B. Singh

Tata Institute of Fundamental Research

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G. P. Sathyanarayana

Tata Institute of Fundamental Research

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Alexander V. St. John

Tata Institute of Fundamental Research

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K. S. Gothe

Tata Institute of Fundamental Research

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P. N. Bhat

Tata Institute of Fundamental Research

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V. N. Gandhi

Tata Institute of Fundamental Research

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B. K. Nagesh

Tata Institute of Fundamental Research

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Kamesh K. Rao

Tata Institute of Fundamental Research

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