Zobrazeno 1 - 10
of 379
pro vyhledávání: '"Iyer, N P"'
Autor:
Aoyagi, M., Bose, R. G., Chun, S., Gau, E., Hu, K., Ishiwata, K., Iyer, N. K., Kislat, F., Kiss, M., Klepper, K., Krawczynski, H., Lisalda, L., Maeda, Y., Malmborg, F. af, Matsumoto, H., Miyamoto, A., Miyazawa, T., Pearce, M., Rauch, B. F., Cavero, N. Rodriguez, Spooner, S., Takahashi, H., Uchida, Y., West, A. T., Wimalasena, K., Yoshimoto, M.
Publikováno v:
Astropart. Phys. 158 (2024) 102944
XL-Calibur is a balloon-borne Compton polarimeter for X-rays in the $\sim$15-80 keV range. Using an X-ray mirror with a 12 m focal length for collecting photons onto a beryllium scattering rod surrounded by CZT detectors, a minimum-detectable polariz
Externí odkaz:
http://arxiv.org/abs/2402.15229
Autor:
Iyer, N. K., Kiss, M., Pearce, M., Stana, T. -A., Awaki, H., Bose, R. G., Dasgupta, A., De Geronimo, G., Gau, E., Hakamata, T., Ishida, M., Ishiwata, K., Kamogawa, W., Kislat, F., Kitaguchi, T., Krawczynski, H., Lisalda, L., Maeda, Y., Matsumoto, H., Miyamoto, A., Miyazawa, T., Mizuno, T., Rauch, B. F., Cavero, N. Rodriguez, Sakamoto, N., Sato, J., Spooner, S., Takahashi, H., Takeo, M., Tamagawa, T., Uchida, Y., West, A. T., Wimalasena, K., Yoshimoto, M.
Publikováno v:
Nuclear Instruments and Methods A 1048 (2023) 167975
The XL-Calibur balloon-borne hard X-ray polarimetry mission comprises a Compton-scattering polarimeter placed at the focal point of an X-ray mirror. The polarimeter is housed within a BGO anticoincidence shield, which is needed to mitigate the consid
Externí odkaz:
http://arxiv.org/abs/2212.04139
Autor:
Abarr, Q., Awaki, H., Baring, M. G., Bose, R., De Geronimo, G., Dowkontt, P., Errando, M., Guarino, V., Hattori, K., Hayashida, K., Imazato, F., Ishida, M., Iyer, N. K., Kislat, F., Kiss, M., Kitaguchi, T., Krawczynski, H., Lisalda, L., Matake, H., Maeda, Y., Matsumoto, H., Mineta, T., Miyazawa, T., Mizuno, T., Okajima, T., Pearce, M., Rauch, B. F., Ryde, F., Shreves, C., Spooner, S., Stana, T. -A., Takahashi, H., Takeo, M., Tamagawa, T., Tamura, K., Tsunemi, H., Uchida, N., Uchida, Y., West, A. T., Wulf, E. A., Yamamoto, R.
XL-Calibur is a hard X-ray (15-80 keV) polarimetry mission operating from a stabilised balloon-borne platform in the stratosphere. It builds on heritage from the X-Calibur mission, which observed the accreting neutron star GX 301-2 from Antarctica, b
Externí odkaz:
http://arxiv.org/abs/2010.10608
Autor:
Abarr, Q., Baring, M., Beheshtipour, B., Beilicke, M., deGeronimo, G., Dowkontt, P., Errando, M., Guarino, V., Iyer, N., Kislat, F., Kiss, M., Kitaguchi, T., Krawczynski, H., Lanzi, J., Li, S., Lisalda, L., Okajima, T., Pearce, M., Press, L., Rauch, B., Stuchlik, D., Takahashi, H., Tang, J., Uchida, N., West, A., Jenke, P., Krimm, H., Lien, A., Malacaria, C., Miller, J. M., Wilson-Hodge, C.
The accretion-powered X-ray pulsar GX 301-2 was observed with the balloon-borne X-Calibur hard X-ray polarimeter during late December 2018, with contiguous observations by the NICER X-ray telescope, the Swift X-ray Telescope and Burst Alert Telescope
Externí odkaz:
http://arxiv.org/abs/2001.03581
Autor:
Roy, Jayashree, Agrawal, P. C., Iyer, N. K., Bhattacharya, D., Yadav, J. S., Antia, H. M., Chauhan, J. V., Choudhury, M., Dedhia, D. K., Katoch, T., Madhavani, P., Manchanda, R. K., Misra, R., Pahari, M., Paul, B., Shah, P.
The Be X-ray Binary 4U 0115+63 was observed by Large Area X-ray Proportional Counter (LAXPC) instrument on AstroSat on 2015 October 24 during the peak of a giant Type II outburst. Prominent intensity oscillations at ~ 1 and ~ 2 mHz frequency were det
Externí odkaz:
http://arxiv.org/abs/1901.09382
SPHiNX is a proposed gamma-ray burst (GRB) polarimeter mission operating in the energy range 50-600 keV with the aim of studying the prompt emission phase. The polarisation sensitivity of SPHiNX reduces as the uncertainty on the GRB sky position incr
Externí odkaz:
http://arxiv.org/abs/1901.08948
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Autor:
Pavithran Keechilat, Gopalakrishna Iyer N, Rajalakshmi Geetha, Subramania Iyer, Krishna Kumar Thankappan, Smitha N V
Publikováno v:
F1000Research, Vol 12 (2023)
Background: Tongue tumors show intra and inter-tumoral heterogenicity with high incidence, relapse and mortality rates necessitating further research. Recurrence/metastasis that occurs after surgical resection of primary cancer is often the reason fo
Externí odkaz:
https://doaj.org/article/01a0931c26214132905c80b4466e0158
Autor:
Pearce, M., Eliasson, L., Iyer, N. Kumar, Kiss, M., Kushwah, R., Larsson, J., Lundman, C., Mikhalev, V., Ryde, F., Stana, T. -A., Takahashi, H., Xie, F.
Gamma-ray bursts (GRBs) are exceptionally bright electromagnetic events occurring daily on the sky. The prompt emission is dominated by X-/$\gamma$-rays. Since their discovery over 50 years ago, GRBs are primarily studied through spectral and tempora
Externí odkaz:
http://arxiv.org/abs/1808.05384
Autor:
Nandi, A., Mandal, S., Sreehari, H., Radhika, D., Das, S., Chattopadhyay, I., Iyer, N., Agrawal, V. K., Aktar, R.
We examine the dynamical behavior of accretion flow around XTE J1859+226 during the 1999 outburst by analyzing the entire outburst data ($\sim$ 166 days) from RXTE Satellite. Towards this, we study the hysteresis behavior in the hardness intensity di
Externí odkaz:
http://arxiv.org/abs/1803.08638