P. Majumdar

Details der Publikationsliste

Zeitraum

1991 - 2009

Anzahl

44

Co-Autoren

Simultaneous multi-frequency observation of the unknown redshift blazar PG 1553+113 in March-April 2008 (2009)

Aleksić, MAGIC Collaboration: J., Anderhub, H., Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., ...

The blazar PG 1553+113 is a well known TeV gamma-ray emitter. In this paper, we determine its spectral energy distribution using simultaneous multi-frequency data in order to study its emission...

Correlated X-ray and Very High Energy emission in the gamma-ray binary LS I +61 303 (2009)

Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., ...

The discovery of very high energy (VHE) gamma-ray emitting X-ray binaries has triggered an intense effort to better understand the particle acceleration, absorption, and emission mechanisms in...

MAGIC Collaboration: Contributions to the 31st International Cosmic Ray Conference (ICRC 2009) (2009)

Antonelli, L. A., Antoranz, P., Backes, M., Baixeras, C., Balestra, S., ...

Index entry listing the contributed papers of the MAGIC collaboration to the 31th International Cosmic Ray Conference (ICRC 2009), July 7-15 2009, \L\'od\'z, Poland. The individual papers are sorted...

Performance of the MAGIC telescopes in stereoscopic mode (2009)

Colin, P., Tridon, D. Borla, Carmona, E., De Sabata, F., Gaug, M., Lombardi, S., ...

The MAGIC gamma-ray observatory has recently been upgraded by a second Cherenkov telescope at a distance of 85 m from the first one. Simultaneous observation of air showers with the two MAGIC...

Monitoring of bright blazars with MAGIC telescope (2009)

Hsu, C. C., Satalecka, K., Thom, M., Backes, M., Bernardini, E., Bonnoli, G., ...

Blazars, a class of Active Galactic Nuclei (AGN) characterized by a close orientation of their relativistic outflows (jets) towards the line of sight, are a well established extragalactic TeV...

The June 2008 flare of Markarian 421 from optical to TeV energies (2009)

Wagner, R. M., Donnarumma, I., Grube, J., Villata, M., Raiteri, C. M., ...

We present optical to very-high energy (VHE) gamma-ray observations of Mrk 421 between 2008 May 24 and June 23. A high-energy (HE) gamma-ray signal was detected by AGILE-GRID during June 9-15,...

Monte Carlo Study on the Large Imaging Air Cherenkov Telescopes for >10 GeV gamma ray astronomy (2009)

Teshima, M., Carmona, E., Colin, P., Majumdar, P., Schweizer, T.

The Imaging Air Cherenkov Telescopes (IACTs), like, HESS, MAGIC and VERITAS well demonstrated their performances by showing many exciting results at very high energy gamma ray domain, mainly between...

Discovery of very high energy gamma-rays from the flat spectrum radio quasar 3C 279 with the MAGIC telescope (2009)

Errando, M., Bock, R., Kranich, D., Lorenz, E., Majumdar, P., Mariotti, M., ...

3C 279 is one of the best studied flat spectrum radio quasars located at a comparatively large redshift of z = 0.536. Observations in the very high energy band of such distant sources were impossible...

Monte Carlo Simulation for the MAGIC-II System (2008)

Carmona, E., Majumdar, P., Moralejo, A., Vitale, V., Sobczynska, D., Haffke, M., ...

Within the year 2007, MAGIC will be upgraded to a two telescope system at La Palma. Its main goal is to improve the sensitivity in the stereoscopic/coincident operational mode. At the same time it...

The MAGIC Project: Contributions to ICRC 2007 (2007)

Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Baixeras, C., ...

The MAGIC Project: Contributions to ICRC 2007, Merida, Mexico. Contents pages for the Contribution on behalf of the MAGIC Collaboration to the 30th ICRC that took place in July 2007 in Merida,...

Monte Carlo Simulation for the MAGIC-II System (2007)

Carmona, E., Majumdar, P., Moralejo, A., Vitale, V., Sobczynska, D., Haffke, M., ...

Within the year 2007, MAGIC will be upgraded to a two telescope system at La Palma. Its main goal is to improve the sensitivity in the stereoscopic/coincident operational mode. At the same time it...

Probing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope (2007)

Albert, J, Aliu, E, Anderhub, H, Antonelli, L A, Antoranz, P, Backes, M, ...

We use the timing of photons observed by the MAGIC gamma-ray telescope during a flare of the active galaxy Markarian 501 to probe a vacuum refractive index ~ 1-(E/M_QGn)^n, n = 1,2, that might be...

Observations of AGNs using PACT (2006)

Bose, D., Chitnis, V. R., Vishwanath, P. R., Majumdar, P., Rahman, M. A., Singh, B. B., ...

We report our observations on 4 AGNs viz, Mkn421, Mkn501, 1ES1426+428 and ON231 belonging to a sub-class called blazars. The observations were carried out using the Pachmarhi Array of Cherenkov...

Bose-Fermi mixtures in an optical lattice (2006)

Sengupta, K., Dupuis, N., Majumdar, P.

We study an atomic Bose-Fermi mixture in an optical lattice which is confined using an optical trap. We obtain the Mott ground states of such a system in the limit of deep optical lattice and discuss...

Flux upper limit of gamma-ray emission by GRB050713a from MAGIC Telescope observations (2006)

Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., ...

The long-duration GRB050713a was observed by the MAGIC Telescope, 40 seconds after the burst onset, and followed up for 37 minutes, until twilight. The observation, triggered by a SWIFT alert,...

Monte Carlo simulation for the MAGIC telescope (2006)

The MAGIC Collaboration, Majumdar, P., Moralejo, A., Bigongiari, C., Blanch, O., Sobczynska, D.

The operation of ground based Imaging Cherenkov telescopes requires a detailed Monte Carlo (MC) simulation of gamma-ray and hadron initiated air showers, as well as of the detector response to them....

Glueball masses in U(1) LGT using the multi-level algorithm (2004)

Majumdar, P., Koma, Y., Koma, M.

The multi-level algorithm allows, at least for pure gauge theories, reliable measurement of exponentially small expectation values. The implementation of the algorithm depends strongly on the...

The long range properties of the compact U(1) lattice gauge theory with the multi-level algorithm (2003)

Koma, Y., Koma, M., Majumdar, P.

The 4D compact U(1) lattice gauge theory (LGT) in the confinement phase is studied with the multi-level algorithm. The static potential, force and flux-tube profile between two static charges are...

Glueball masses in U(1) LGT using the multi-level algorithm (2003)

Majumdar, P., Koma, Y., Koma, M.

The multi-level algorithm allows, at least for pure gauge theories, reliable measurement of exponentially small expectation values. The implementation of the algorithm depends strongly on the...

Angular Resolution of the Pachmarhi Array of Cerenkov Telescopes (2002)

Majumdar, P., Bhat, P. N., Acharya, B. S., Chitnis, V. R., Rahman, M. A., Singh, B. B., ...

The Pachmarhi Array of Cerenkov Telescopes consists of a distributed array of 25 telescopes that are used to sample the atmospheric Cerenkov Photon showers. Each telescope consists of 7 parabolic...

Model Tests and Engineering Studies of the SWATH VII Small Waterplane Area Twin-Hull Ship. (2002)

Kirkman,Karl L., Young,B. J., Kloetzli,J. W., Majumdar,P.

The main objective of this effort is to obtain drag data and wake data for the SWATH VII Form, and using this data to obtain estimates of the required propulsive horsepower for the design...

Distributed Data Acquisition System for Pachmarhi Array of Cerenkov Telescopes (2001)

Bhat, P. N., Acharya, B. S., Chitnis, V. R., D'Souza, A. I., Francis, P. J., Gothe, K. S., ...

Pachmarhi Array of \v Cerenkov Telescopes (PACT) consists of a 5$\times$5 array of \v Cerenkov telescopes deployed over an area of 100 $m$ $\times$ 80 $m$, in the form of a rectangular matrix. The...

Pachmarhi Array of \v{C}erenkov Telescopes and its Sensitivity (2001)

Chitnis, V. R., Acharya, B. S., Bhat, P. N., Gothe, K. S., John, A. V., Majumdar, P., ...

Pachmarhi Array of \v{C}erenkov Telescopes (PACT) has been designed to search for celestial TeV $\gamma-$rays using the wavefront sampling technique. PACT, located at Pachmarhi, (latitude 22$^\circ$...

Very High Energy Gamma Ray Emission from Crab Nebula with the PACT Array (2001)

Vishwanath, P. R., Acharya, B. S., Bhat, P. N., Chitnis, V. R., Majumdar, P., Rahman, M. A., ...

The Crab nebula has proved to be the nearest to a standard candle in VHE $\gamma-$ ray astronomy. Results on the gamma ray emission from the nebula at various energies have come in the last decade...

Angular Resolution of Pachmarhi Array of Cerenkov Telescopes (2001)

Majumdar, P., Acharya, B. S., Bhat, P. N., Chitnis, V. R., Rahman, M. A., Singh, B. B., ...

Pachmarhi Array of \v{C}erenkov Telescopes(PACT), consisting of a distributed array of 25 telescopes is used to sample the atmospheric \v{C}erenkov Photon showers. The shower front is fitted to a...

Very High Energy Gamma Ray Emission from Crab and Geminga Pulsars (2001)

Vishwanath, P. R., Acharya, B. S., Bhat, P. N., Chitnis, V. R., Majumdar, P., Rahman, M. A., ...

The main inference from the experiments of the '80s that the time-averaged energy spectra of pulsars had to steepen in the GeV-TeV energy region has been reinforced in the '90s from experiments with...

Observations of Mkn 421 using Pachmarhi Array of \v{C}erenkov Telescopes (2001)

Bhat, P. N., Acharya, B. S., Chitnis, V. R., Majumdar, P., Rahman, M. A., Singh, B. B., ...

Pachmarhi Array of \v{C}erenkov Telescopes (PACT), based on wavefront sampling technique, has been used for detecting TeV gamma rays from galactic and extra-galactic $\gamma $-ray sources. The...

Gamma Ray and Hadron generated \v{C}erenkov Photon Spectra at Various Observation Altitudes (2001)

Rahman, M. A., Bhat, P. N., Acharya, B. S., Chitnis, V. R., Majumdar, P., Vishwanath, P. R.

We study the propagation of Cerenkov photons generated by Very High Energy gamma-rays and hadrons in the atmosphere. The photon production height distributions are estimated from semi-empirical...

Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites (1999)

Ye, Jinwu, Kim, Yong Baek, Millis, A. J., Majumdar, P., Tesanovic, Z.

We show that the Anomalous Hall Effect (AHE) observed in Colossal Magnetoresistance Manganites is a manifestation of Berry phase effects caused by carrier hopping in a non-trivial spin background. We...

The long range properties of the compact U(1) lattice gauge theory with the multi-level algorithm

Koma,Y., Koma,M., Majumdar,P.

The 4D compact U(1) lattice gauge theory (LGT) in the confinement phase is studied with the multi-level algorithm. The static potential, force and flux-tube profile between two static charges are...

The long range properties of the compact U(1) lattice gauge theory with the multi-level algorithm

Koma, Y., Koma, M., Majumdar, P.

The 4D compact U(1) lattice gauge theory (LGT) in the confinement phase is studied with the multi-level algorithm. The static potential, force and flux-tube profile between two static charges are...

A study of physiological responses during match play in Indian national kabaddi players.

Khanna, G L, Majumdar, P, Malik, V, Vrinda, T, Mandal, M

OBJECTIVE: To determine the physical and physiological profile of kabaddi players and the physiological demands of playing a kabaddi match. METHODS: Maximum aerobic capacity (VO2max), maximum...

Physiological analysis to quantify training load in badminton.

Majumdar, P, Khanna, G L, Malik, V, Sachdeva, S, Arif, M, Mandal, M

OBJECTIVE: To estimate the training load of specific on court training regimens based on the magnitude of variation of heart rate-lactate response during specific training and to determine the...

A MAGIC view of the Very High Energy γ −ray Sky

Majumdar, P., Collaboratin, The MAGIC

Located at the Canary island of La Palma MAGIC is currently the largest single dish Cherenkov telescope operating since September 2004. Since then it has been delivering a wealth of exciting physics...

Target of Opportunity Observations of Blazars with the MAGIC Telescope

The MAGIC Collaboration, Lindfors, E., Mazin, D., Hayashida, M., Majumdar, P.

The MAGIC collaboration has been performing Target of Opportunity observations of blazars, when seen flaring in the optical by the Tuorla blazar monitoring program. In the past three years, there...