| Name: | Atul Pathania |
| Affiliation: | Bhabha Atomic Research Centre, Mumbai |
| Conference ID : | ASI2024_629 |
| Title : | Search for Pulsed Very High Energy Gamma-ray Emission from the Crab Pulsar using MACE |
| Authors : | A. Pathania1, A. Tolamatti1,2, B. C. Joshi3, K. K. Singh1,2, H. Grover4, P. Arumugam4, K. K. Yadav1,2, Y. Gupta3, B. B. Singh5, N. Bhatt1, S. Bhattcharyya1,2, C. Borwankar1, K. Chanchalani1, P. Chandra1, V. R. Chitnis5, N. Chouhan1, Z. A. Dar1, M. P. Das1, V. K. Dhar1, P. Dorjey5, N. Dorji5, B. Ghosal1,2, S. Godambe1, S. Godiyal1, J. Hariharan1, Keshavananda1, M. Khurana1,2, S. V. Kotwal1, M. K. Koul1, C. P. Kushwaha1, N. Mankuzhyil1, S. Norlha1, P. Pandey1, S. Sahayanathan1,2, D. Sarkar1,2, M. Sharma1, R. Thubstan1, K. Venugopal1 |
| Authors Affiliation: | 1 A. Pathania, A. Tolamatti, K. K. Singh, K. K. Yadav, N. Bhatt, S. Bhattcharyya, C. Borwankar, K. Chanchalani, P. Chandra, V. R. Chitnis, N. Chouhan, Z. A. Dar, M. P. Das, V. K. Dhar, B. Ghosal, S. Godambe, S. Godiyal, J. Hariharan, Keshavananda, M. Khurana, S. V. Kotwal, M. K. Koul, C. P. Kushwaha, N. Mankuzhyil, S. Norlha, P. Pandey, S. Sahayanathan, D. Sarkar, M. Sharma, R. Thubstan, K. Venugopal Affiliation (Astrophsyical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400085, India)
2 A. Tolamatti, K. K. Singh, K. K. Yadav, S. Bhattcharyya, B. Ghosal, M. Khurana, S. Sahayanathan, D. Sarkar, Affiliation (Homi Bhabha National Institute, Mumbai 400094, India)
3 B. C. Joshi, Y. Gupta, Affiliation (National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune 411007, India)
4 H. Grover, P. Arumugam Affiliation (Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India)
5 B. B. Singh, V. R. Chitnis, P. Dorjey, N. Dorji, Affiliation (Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005, India) |
| Mode of Presentation: | Poster |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | The newly commissioned Major Atmospheric Cherenkov Experiment (MACE) telescope at Hanle, India, has started its regular science observations. Due to its low threshold energy and high point source flux sensitivity, MACE is an ideal instrument for very high energy gamma-ray observations of the Galactic and extragalactic sources in the energy range above 20 GeV. Among the population of various Galactic gamma-ray sources, high energy emission from pulsars is described by a power law with super-exponential cutoff spectra having cutoff energies at few GeV. This limits the detection of gamma-ray pulsars by the state-of-the-art ground-based telescopes operating in the energy range of few tens of GeV to tens of TeV. Here, we present the preliminary results from the early observations of the Crab Pulsar with the MACE telescope. We have analysed the MACE data on Crab Nebula for the period from November 2022 to February 2023 using the TEMPO2 package. We search for the pulsation in the gamma-ray emission originating from the central region of the Crab Nebula using the pulsar parameters extracted from the radio observations with GMRT. We present the phasogram of about 15 hours of Crab observations with MACE. We also discuss the implications of GeV-TeV emission from the Crab pulsar using space and ground-based gamma-ray observations. |
