Zobrazeno 1 - 10
of 547
pro vyhledávání: '"JOHNSON, T. J."'
Autor:
Bangale, P., Bhattacharyya, B., Camilo, F., Clark, C. J., Cognard, I., DeCesar, M. E., Ferrara, E. C., Gentile, P., Guillemot, L., Hessels, J. W. T., Johnson, T. J., Kerr, M., McLaughlin, M. A., Nieder, L., Ransom, S. M., Ray, P. S., Roberts, M. S. E., Roy, J., Sanpa-Arsa, S., Theureau, G., Wolff, M. T.
Publikováno v:
ApJ, Vol 966, 20 pp. (2024)
We have searched for radio pulsations towards 49 Fermi Large Area Telescope (LAT) 1FGL Catalog $\gamma$-ray sources using the Green Bank Telescope at 350 MHz. We detected 18 millisecond pulsars (MSPs) in blind searches of the data; 10 of these were d
Externí odkaz:
http://arxiv.org/abs/2402.09366
Autor:
Hou, X., Zhang, W., Freire, P. C. C., Torres, D. F., Ballet, J., Smith, D. A., Johnson, T. J., Kerr, M., Cheung, C. C., Guillemot, L., Li, J., Zhang, L., Ridolfi, A., Wang, P., Li, D., Yuan, J., Wang, N.
We analyzed the globular cluster M5 (NGC 5904) using 15 years of gamma-ray data from the Fermi Large Area Telescope (LAT). Using rotation ephemerides generated from Arecibo and FAST radio telescope observations, we searched for gamma-ray pulsations f
Externí odkaz:
http://arxiv.org/abs/2401.08231
Autor:
Sokolovsky, K. V., Johnson, T. J., Buson, S., Jean, P., Cheung, C. C., Mukai, K., Chomiuk, L., Aydi, E., Molina, B., Kawash, A., Linford, J. D., Mioduszewski, A. J., Rupen, M. P., Sokoloski, J. L., Williams, M. N., Steinberg, E., Vurm, I., Metzger, B. D., Page, K. L., Orio, M., Quimby, R. M., Shafter, A. W., Corbett, H., Bolzoni, S., DeYoung, J., Menzies, K., Romanov, F. D., Richmond, M., Ulowetz, J., Vanmunster, T., Williamson, G., Lane, D. J., Bartnik, M., Bellaver, M., Bruinsma, E., Dugan, E., Fedewa, J., Gerhard, C., Painter, S., Peterson, D. -M., Rodriguez, J. E., Smith, C., Sullivan, H., Watson, S.
Classical novae are shock-powered multi-wavelength transients triggered by a thermonuclear runaway on an accreting white dwarf. V1674 Her is the fastest nova ever recorded (time to declined by two magnitudes is t_2=1.1 d) that challenges our understa
Externí odkaz:
http://arxiv.org/abs/2302.03043
Autor:
Cheung, C. C., Johnson, T. J., Jean, P., Kerr, M., Page, K. L., Osborne, J. P., Beardmore, A. P., Sokolovsky, K. V., Teyssier, F., Ciprini, S., Marti-Devesa, G., Mereu, I., Razzaque, S., Wood, K. S., Shore, S. N., Korotkiy, S., Levina, A., Blumenzweig, A.
We report the Fermi-LAT gamma-ray detection of the 2021 outburst of the symbiotic recurrent nova RS Ophiuchi. In this system, unlike classical novae from cataclysmic binaries, the ejecta from the white dwarf form shocks when interacting with the dens
Externí odkaz:
http://arxiv.org/abs/2207.02921
Autor:
Grießmeier, J. -M., Smith, D. A., Theureau, G., Johnson, T. J., Kerr, M., Bondonneau, L., Cognard, I., Serylak, M.
Publikováno v:
A&A 654, A43 (2021)
The Fermi Large Area Telescope has detected over 260 gamma-ray pulsars. About one quarter of these are labeled as radio-quiet. In the population of nonrecycled gamma-ray pulsars, the fraction of radio-quiet pulsars is higher, about one half. Most rad
Externí odkaz:
http://arxiv.org/abs/2108.01749
Autor:
The Fermi LAT Collaboration, Ajello, M., Atwood, W. B., Axelsson, M., Bagagli, R., Bagni, M., Baldini, L., Bastieri, D., Bellardi, F., Bellazzini, R., Bissaldi, E., Bloom, E. D., Bonino, R., Bregeon, J., Brez, A., Bruel, P., Buehler, R., Buson, S., Cameron, R. A., Caraveo, P. A., Cavazzuti, E., Ceccanti, M., Chen, S., Cheung, C. C., Ciprini, S., Cognard, I., Cohen-Tanugi, J., Cutini, S., D'Ammando, F., Luque, P. de la Torre, de Palma, F., Digel, S. W., Dirirsa, F., Di Lalla, N., Di Venere, L., Domínguez, A., Fabiani, D., Ferrara, E. C., Fiori, A., Foglia, G., Fukazawa, Y., Fusco, P., Gargano, F., Gasparrini, D., Giroletti, M., Glanzman, T., Green, D., Griffin, S., Grondin, M. -H., Grove, J. E., Guillemot, L., Guiriec, S., Gustafsson, M., Hays, E., Horan, D., Jóhannesson, G., Johnson, T. J., Kamae, T., Kerr, M., Kuss, M., Larsson, S., Latronico, L., Lemoine-Goumard, M., Li, J., Liodakis, I., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Maldera, S., Manfreda, A., Martí-Devesa, G., Mazziotta, M. N., Menon, N., Mereu, I., Meyer, M., Michelson, P. F., Minuti, M., Mitthumsiri, W., Mizuno, T., Mongelli, M., Monzani, M. E., Moskalenko, I. V., Negro, M., Nuss, E., Ojha, R., Orienti, M., Orlando, E., Paccagnella, A., Paliya, V. S., Paneque, D., Pei, Z., Perkins, J. S., Pesce-Rollins, M., Pinchera, M., Piron, F., Poon, H., Porter, T. A., Primavera, R., Principe, G., Racusin, J. L., Rainò, S., Rando, R., Rani, B., Rapposelli, E., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Russell, J. J., Saggini, N., Parkinson, P. M. Saz, Scolieri, N., Serini, D., Sgrò, C., Siskind, E. J., Smith, D. A., Spandre, G., Spinelli, P., Suson, D. J., Tajima, H., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Valverde, J., Vigiani, L., Zaharijas, G.
Publikováno v:
ApJS 256 (2021) 12
The Large Area Telescope (LAT), the primary instrument for the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy gamma-ray telescope, covering the energy range from 30 MeV to more than 300 GeV. We describ
Externí odkaz:
http://arxiv.org/abs/2106.12203
Autor:
Bhattacharyya, B., Roy, J., Johnson, T. J., Ray, P. S., Freire, P. C. C., Gupta, Y., Bhattacharya, D., Kaninghat, A., Stappers, B. W., Ferrara, E. C., Sengupta, S., Rathour, R. S., Kerr, M., Smith, D. A., Parkinson, P. M. Saz, Ransom, S. M., Michelson, P. F.
We performed deep observations to search for radio pulsations in the directions of 375 unassociated Fermi Large Area Telescope (LAT) gamma-ray sources using the Giant Metrewave Radio Telescope (GMRT) at 322 and 607 MHz. In this paper we report the di
Externí odkaz:
http://arxiv.org/abs/2102.04026
Autor:
Principe, G., Migliori, G., Johnson, T. J., D'Ammando, F., Giroletti, M., Orienti, M., Stanghellini, C., Taylor, G. B., Torresi, E., Cheung, C. C.
Publikováno v:
A&A 635, A185 (2020)
Context. According to radiative models, radio galaxies may produce gamma-ray emission from the first stages of their evolution. However, very few such galaxies have been detected by the Fermi Large Area Telescope (LAT) so far. Aims. NGC 3894 is a nea
Externí odkaz:
http://arxiv.org/abs/2003.01476
Autor:
Coe, M. J., Okazaki, A. T., Steele, I. A., Ng, C. -Y., Ho, Wynn C. G., Lyne, A. G., Stappers, B., Johnson, T. J., Ray, Paul S., Kerr, M.
Publikováno v:
Mon. Not. R. Astron. Soc. 485, 1864-1875 (2019)
X-ray photometry and optical spectra are presented covering the periastron passage of the highly-eccentric, ~50 year binary system PSR J2032+4127 in November 2017. This system consists of a 143 ms pulsar in orbit around a massive OB star, MT 91-213.
Externí odkaz:
http://arxiv.org/abs/1903.02084
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