Search Results - "Enoto, T"

The Corona Contracts in a Black-Hole Transient by Kara, E., Steiner, J. F., Fabian, A C, Cackett, E M, Uttley, P, Remillard, R A, Gendreau, K C, Arzoumanian, Z, Altamirano, D, Eikenberry, S, Enoto, T, Homan, J, Nielsen, J, Stevens, A L

“…The geometry of the accretion flow around stellar-mass black holes can change on timescales of days to months1–3. When a black hole emerges from quiescence…”
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Sign of Hard-X-Ray Pulsation from the γ -Ray Binary System LS 5039 by Yoneda, H, Makishima, K, Enoto, T, Khangulyan, D, Matsumoto, T, Takahashi, T

“…To understand the nature of the brightest γ-ray binary system LS 5039, hard x-ray data of the object, taken with the Suzaku and NuSTAR observatories in 2007…”
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Relativistic Runaway Electron Avalanche Development Near the Electric Field Threshold in Inhomogeneous Air by Diniz, G. S., Wada, Y., Ohira, Y., Nakazawa, K., Tsurumi, M., Enoto, T.

“…Relativistic Runaway Electrons Avalanches (RREAs) development depends on the applied electric field and the environment's air density. This dependency controls…”
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Discovery of 40.5 ks Hard X-Ray Pulse-phase Modulations from SGR 1900+14 by Makishima, K., Tamba, T., Aizawa, Y., Odaka, H., Yoneda, H., Enoto, T., Suzuki, H.

“…Abstract X-ray timing properties of the magnetar SGR 1900+14 were studied, using the data taken with Suzaku in 2009 and NuSTAR in 2016, for a time lapse of 114…”
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NICER Observations Reveal that the X-ray Transient MAXI J1348-630 is a Black Hole X-ray Binary by Zhang, L, Altamirano, D, cunco, V A, Alabarta, K, Enoto, T, Homan, J, Remillard, R A, Uttley, P, Vincentelli, F M, Arzoumanian, Z, Bult, P, Gendreau, K C, Markwardt, C, Sanna, A, Strohmayer, T E, Steiner, J F, Basak, A, Neilsen, J, Tombesi, F

“…We studied the outburst evolution and timing properties of the recently discovered X-ray transient MAXI J1348−630 as observed with NICER. We produced the…”
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Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61 by Makishima, K, Enoto, T, Hiraga, J S, Nakano, T, Nakazawa, K, Sakurai, S, Sasano, M, Murakami, H

“…Magnetars are a special type of neutron stars, considered to have extreme dipole magnetic fields reaching approximately 10(exp 11) T. The magnetar 4U 0142þ61,…”
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Downward Terrestrial Gamma-Ray Flash Observed in a Winter Thunderstorm by Wada, Y, Enoto, T, Nakazawa, K, Furuta, Y, Yuasa, T, Nakamura, Y, Morimoto, T, Matsumoto, T, Makishima, K, Tsuchiya, H

“…During a winter thunderstorm on 24 November 2017, a strong burst of gamma rays with energies up to ∼10  MeV was detected coincident with a lightning discharge,…”
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X-RAY AND ROTATIONAL LUMINOSITY CORRELATION AND MAGNETIC HEATING OF RADIO PULSARS by Shibata, S., Watanabe, E., Yatsu, Y., Enoto, T., Bamba, A.

“…ABSTRACT Previous works have suggested a correlation between the X-ray luminosity and the rotational luminosity of radio pulsars. However, none of the obtained…”
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Meteorological Aspects of Gamma‐Ray Glows in Winter Thunderstorms by Wada, Y., Enoto, T., Kubo, M., Nakazawa, K., Shinoda, T., Yonetoku, D., Sawano, T., Yuasa, T., Ushio, T., Sato, Y., Diniz, G. S., Tsuchiya, H.

“…During three winter seasons from November 2016 to March 2019, 11 gamma‐ray glows were detected at a single observation site of our ground‐based gamma‐ray…”
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Characteristics of Low‐Frequency Pulses Associated With Downward Terrestrial Gamma‐Ray Flashes by Wada, Y., Morimoto, T., Nakamura, Y., Wu, T., Enoto, T., Nakazawa, K., Ushio, T., Yuasa, T., Tsuchiya, H.

“…Winter thunderstorms in Japan have been recognized as an ideal target to observe high‐energy atmospheric phenomena thanks to low‐charge‐center cloud…”
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Long term radio and X-ray evolution of the magnetar Swift J1818.0-1607 by Rajwade, K M, Stappers, B W, Lyne, A G, Shaw, B, Mickaliger, M B, Liu, K, Kramer, M, Desvignes, G, Karuppusamy, R, Enoto, T, Güver, T, Hu, Chin-Ping, Surnis, M P

“…ABSTRACT We report on the the long term monitoring campaign of the seemingly youngest magnetar Swift J1818.0–1607 at radio and X-ray wavelengths over a span of…”
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Citizen Science Observation of a Gamma‐Ray Glow Associated With the Initiation of a Lightning Flash by Tsurumi, M., Enoto, T., Ikkatai, Y., Wu, T., Wang, D., Shinoda, T., Nakazawa, K., Tsuji, N., Diniz, G. S., Kataoka, J., Koshikawa, N., Iwashita, R., Kamogawa, M., Takagaki, T., Miyake, S., Tomioka, D., Morimoto, T., Nakamura, Y., Tsuchiya, H.

“…Gamma‐ray glows are observational evidence of relativistic electron acceleration due to the electric field in thunderclouds. However, it is yet to be…”
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The SUrvey for Pulsars and Extragalactic Radio Bursts - IV. Discovery and polarimetry of a 12.1-s radio pulsar by Morello, V, Keane, E F, Enoto, T, Guillot, S, Ho, W C G, Jameson, A, Kramer, M, Stappers, B W, Bailes, M, Barr, E D, Bhandari, S, Caleb, M, Flynn, C M L, Jankowski, F, Johnston, S, Straten, W van, Arzoumanian, Z, Bogdanov, S, Gendreau, K C, Malacaria, C, Ray, Paul S., Remillard, R A

“…We report the discovery of PSR J2251−3711, a radio pulsar with a spin period of 12.1 s, the second longest currently known. Its timing parameters imply a…”
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Compton Camera Imaging of a Gamma‐Ray Glow From a Thunderstorm by Kuriyama, E., Masubuchi, M., Koshikawa, N., Iwashita, R., Omata, A., Kanda, T., Kataoka, J., Tsurumi, M., Diniz, G., Enoto, T., Wada, Y.

“…Gamma‐ray glows associated with thunderclouds have been observed since the 1980s, however it remains unclear how, and at which thunderstorms gamma‐ray glows…”
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Broadband X-ray burst spectroscopy of the fast-radio-burst-emitting Galactic magnetar by Younes, G., Baring, M. G., Kouveliotou, C., Arzoumanian, Z., Enoto, T., Doty, J., Gendreau, K. C., Göğüş, E., Guillot, S., Güver, T., Harding, A. K., Ho, W. C. G., Horst, A. J. van der, Hu, C.-P., Jaisawal, G. K., Kaneko, Y., LaMarr, B. J., Lin, L., Majid, W., Okajima, T., Ray, P. S., Roberts, O. J., Steiner, J. F., Wadiasingh, Z.

“…Magnetars are young, magnetically powered neutron stars that possess the strongest magnetic fields in the Universe. Fast radio bursts (FRBs) are extremely…”
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X-ray spectral and timing evolution of MAXI J1727-203 with NICER by Jativa, K, Altamirano, D, Méndez, M, Cúneo, V A, Zhang, L, Remillard, R, Castro, A, Ludlam, R M, Steiner, J F, Enoto, T, Homan, J, Arzoumanian, Z, Bult, P, Gendreau, K C, Markwardt, C, Strohmayer, T E, Uttley, P, Tombesi, F, Buisson, D J K

“…We present a detailed X-ray spectral and variability study of the full 2018 outburst of MAXI J1727–203 using NICER observations. The outburst lasted…”
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Detection of high-energy gamma rays from winter thunderclouds by Tsuchiya, H, Enoto, T, Yamada, S, Yuasa, T, Kawaharada, M, Kitaguchi, T, Kokubun, M, Kato, H, Okano, M, Nakamura, S, Makishima, K

“…A report is made on a comprehensive observation of a burstlike gamma-ray emission from thunderclouds on the Sea of Japan, during strong thunderstorms on 6…”
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Identification of the Hard X-Ray Source Dominating the E > 25 keV Emission of the Nearby Galaxy M31 by Yukita, M., Ptak, A., Hornschemeier, A. E., Wik, D., Maccarone, T. J., Pottschmidt, K., Zezas, A., Antoniou, V., Ballhausen, R., Lehmer, B. D., Lien, A., Williams, B., Baganoff, F., Boyd, P. T., Enoto, T., Kennea, J., Page, K. L., Choi, Y.

“…We report the identification of a bright hard X-ray source dominating the M31 bulge above 25 keV from a simultaneous NuSTAR-Swift observation. We find that…”
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Termination of Electron Acceleration in Thundercloud by Intracloud/Intercloud Discharge by Wada, Y., Bowers, G. S., Enoto, T., Kamogawa, M., Nakamura, Y., Morimoto, T., Smith, D. M., Furuta, Y., Nakazawa, K., Yuasa, T., Matsuki, A., Kubo, M., Tamagawa, T., Makishima, K., Tsuchiya, H.

“…An on‐ground observation program for high‐energy atmospheric phenomena in winter thunderstorms along the Japan Sea has been performed via measurements of gamma…”
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Atmospheric Electron Spatial Range Extended by Thundercloud Electric Field Below the Relativistic Runaway Electron Avalanche Threshold by Diniz, G., Wada, Y., Ohira, Y., Nakazawa, K., Enoto, T.

“…Cosmic‐ray shower, hitting the atmosphere all the time, includes high‐energy electrons. Electric fields in thunderstorms accelerate these electrons so that…”
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