Search

Your search keyword '"Imazato, F."' showing total 2 results
Start Over Author "Imazato, F." Database OAIster
2 results on '"Imazato, F."'

1. XL-Calibur -- a second-generation balloon-borne hard X-ray polarimetry mission

Author

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., 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., and Yamamoto, R.

Abstract

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, between December 29th 2018 and January 1st 2019. The XL-Calibur design incorporates an X-ray mirror, which focusses X-rays onto a polarimeter comprising a beryllium rod surrounded by Cadmium Zinc Telluride (CZT) detectors. The polarimeter is housed in an anticoincidence shield to mitigate background from particles present in the stratosphere. The mirror and polarimeter-shield assembly are mounted at opposite ends of a 12 m long lightweight truss, which is pointed with arcsecond precision by WASP - the Wallops Arc Second Pointer. The XL-Calibur mission will achieve a substantially improved sensitivity over X-Calibur by using a larger effective area X-ray mirror, reducing background through thinner CZT detectors, and improved anticoincidence shielding. When observing a 1 Crab source for $t_{\rm day}$ days, the Minimum Detectable Polarisation (at 99% confidence level) is $\sim$2$\%\cdot t_{\rm day}^{-1/2}$. The energy resolution at 40 keV is $\sim$5.9 keV. The aim of this paper is to describe the design and performance of the XL-Calibur mission, as well as the foreseen science programme., Comment: 19 pages, 17 figures. Accepted for publication in Astroparticle Physics

Published
2020
Full Text
View/download PDF

2. Fermi-LAT Observations of LIGO/Virgo Event GW170817

Author

Ajello, M., Allafort, A., Axelsson, Magnus, Baldini, L., Barbiellini, G., Baring, M. G., Bastieri, D., Bellazzini, R., Berenji, B., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Burnett, T. H., Buson, S., Cameron, R. A., Caputo, R., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Chekhtman, A., Cheung, C. C., Chiang, J., Chiaro, G., Ciprini, S., Cohen-Tanugi, J., Cominsky, L. R., Costantin, D., Cuoco, A., Cutini, S., D'Ammando, F., de Palma, F., Di Lalla, N., Di Mauro, M., Di Venere, L., Dubois, R., Dumora, D., Favuzzi, C., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Gill, R., Giordano, F., Giroletti, M., Glanzman, T., Granot, J., Green, D., Grenier, I. A., Grondin, M. -H, Guillemot, L., Guiriec, S., Harding, A. K., Hays, E., Horan, D., Imazato, F., Johannesson, G., Kamae, T., Kensei, S., Kocevski, D., Kuss, M., La Mura, G., Larsson, Stefan, Latronico, L., Li, J., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mazziotta, M. N., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monzani, M. E., Moretti, E., Morselli, A., Moskalenko, I. V., Negro, M., Nuss, E., Ojha, R., Omodei, N., Orlando, E., Ormes, J. F., Palatiello, M., Paliya, V. S., Paneque, D., Persic, M., Pesce-Rollins, M., Petrosian, V., Piron, F., Porter, T. A., Principe, G., Racusin, J. L., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Ritz, S., Rochester, L. S., Ryde, Felix, Parkinson, P. M. Saz, Sgro, C., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tajima, H., Takahashi, M., Tak, D., Thayer, J. G., Thayer, J. B., Torres, D. F., Torresi, E., Tosti, G., Troja, E., Valverde, J., Venters, T. M., Vianello, G., Wood, K., Yang, C., Zaharijas, G., Ajello, M., Allafort, A., Axelsson, Magnus, Baldini, L., Barbiellini, G., Baring, M. G., Bastieri, D., Bellazzini, R., Berenji, B., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Burnett, T. H., Buson, S., Cameron, R. A., Caputo, R., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Chekhtman, A., Cheung, C. C., Chiang, J., Chiaro, G., Ciprini, S., Cohen-Tanugi, J., Cominsky, L. R., Costantin, D., Cuoco, A., Cutini, S., D'Ammando, F., de Palma, F., Di Lalla, N., Di Mauro, M., Di Venere, L., Dubois, R., Dumora, D., Favuzzi, C., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Gill, R., Giordano, F., Giroletti, M., Glanzman, T., Granot, J., Green, D., Grenier, I. A., Grondin, M. -H, Guillemot, L., Guiriec, S., Harding, A. K., Hays, E., Horan, D., Imazato, F., Johannesson, G., Kamae, T., Kensei, S., Kocevski, D., Kuss, M., La Mura, G., Larsson, Stefan, Latronico, L., Li, J., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mazziotta, M. N., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monzani, M. E., Moretti, E., Morselli, A., Moskalenko, I. V., Negro, M., Nuss, E., Ojha, R., Omodei, N., Orlando, E., Ormes, J. F., Palatiello, M., Paliya, V. S., Paneque, D., Persic, M., Pesce-Rollins, M., Petrosian, V., Piron, F., Porter, T. A., Principe, G., Racusin, J. L., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Ritz, S., Rochester, L. S., Ryde, Felix, Parkinson, P. M. Saz, Sgro, C., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tajima, H., Takahashi, M., Tak, D., Thayer, J. G., Thayer, J. B., Torres, D. F., Torresi, E., Tosti, G., Troja, E., Valverde, J., Venters, T. M., Vianello, G., Wood, K., Yang, C., and Zaharijas, G.

Abstract

We present the Fermi Large Area Telescope (LAT) observations of the binary neutron star merger event GW170817 and the associated short gamma-ray burst (SGRB) GRB 170817A detected by the Fermi Gamma-ray Burst Monitor. The LAT was entering the South Atlantic Anomaly at the time of the LIGO/Virgo trigger (t(GW)) and therefore cannot place constraints on the existence of high-energy (E > 100 MeV) emission associated with the moment of binary coalescence. We focus instead on constraining high-energy emission on longer timescales. No candidate electromagnetic counterpart was detected by the LAT on timescales of minutes, hours, or days after the LIGO/Virgo detection. The resulting flux upper bound (at 95% C. L.) from the LAT is 4.5. x. 10(-10) erg cm(-2) s(-1) in the 0.1-1 GeV range covering a period from tGW. +. 1153 s to t(GW). +. 2027 s. At the distance of GRB 170817A, this flux upper bound corresponds to a luminosity upper bound of 9.7. x. 10(43) erg s(-1), which is five orders of magnitude less luminous than the only other LAT SGRB with known redshift, GRB 090510. We also discuss the prospects for LAT detection of electromagnetic counterparts to future gravitational-wave events from Advanced LIGO/Virgo in the context of GW170817/GRB 170817A., QC 20180801

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results