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Browsing by Author "Boyce, H."

Browsing by Author "Boyce, H."

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  • Constraining particle acceleration in Sgr A<SUP>?</SUP> with simultaneous GRAVITY, Spitzer, NuSTAR, and Chandra observations 
    GRAVITY Collaboration; Abuter, R.; Amorim, A.; Bauböck, M.; Baganoff, F.; Berger, J. P.; Boyce, H.; Bonnet, H.; Brandner, W.; Clénet, Y.; Davies, R.; de Zeeuw, P. T.; Dexter, J.; Dallilar, Y.; Drescher, A.; Eckart, A.; Eisenhauer, F.; Fazio, G. G.; Förster Schreiber, N. M.; Foster, K.; Gammie, C.; Garcia, P.; Gao, F.; Gendron, E.; Genzel, R.; Ghisellini, G.; Gillessen, S.; Gurwell, M. A.; Habibi, M.; Haggard, D.; Hailey, C.; Harrison, F. A.; Haubois, X.; Heißel, G.; Henning, T.; Hippler, S.; Hora, J. L.; Horrobin, M.; Jiménez-Rosales, A.; Jochum, L.; Jocou, L.; Kaufer, A.; Kervella, P.; Lacour, S.; Lapeyrère, V.; Le Bouquin, J. -B; Léna, P.; Lowrance, P. J.; Lutz, D.; Markoff, S.; Mori, K.; Morris, M. R.; Neilsen, J.; Nowak, M.; Ott, T.; Paumard, T.; Perraut, K.; Perrin, G.; Ponti, G.; Pfuhl, O.; Rabien, S.; Rodríguez-Coira, G.; Shangguan, J.; Shimizu, T.; Scheithauer, S.; Smith, H. A.; Stadler, J.; Stern, D. K.; Straub, O.; Straubmeier, C.; Sturm, E.; Tacconi, L. J.; Vincent, F.; von Fellenberg, S. D.; Waisberg, I.; Widmann, F.; Wieprecht, E.; Wiezorrek, E.; Willner, S. P.; Witzel, G.; Woillez, J.; Yazici, S.; Young, A.; Zhang, S.; Zins, G. (2021)
    We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A<SUP>?</SUP>. We obtained light curves in the M, K, and H bands in the mid- and near-infrared and in the 2 - 8 keV ...
  • Erratum: &quot;Simultaneous X-Ray and Infrared Observations of Sagittarius A*&#39;s Variability&quot; (2019, ApJ, 871, 161) 
    Boyce, H.; Haggard, D.; Witzel, G.; Willner, Steven P.; Neilsen, J.; Hora, Joseph L.; Markoff, S.; Ponti, G.; Baganoff, F.; Becklin, E.; Fazio, Giovanni; Lowrance, P.; Morris, M. R.; Smith, H. A. (2021)
    Erratum to: Simultaneous X-Ray and Infrared Observations of Sagittarius A*&#39;s Variability https://10.3847/1538-4357/aaf71f
  • Multiwavelength Variability of Sagittarius A* in 2019 July 
    Boyce, H.; Haggard, D.; Witzel, G.; Fellenberg, S. von; Willner, S. P.; Becklin, E. E.; Do, T.; Eckart, A.; Fazio, G. G.; Gurwell, M. A.; Hora, J. L.; Markoff, S.; Morris, M. R.; Neilsen, J.; Nowak, M.; Smith, H. A.; Zhang, S. (2022)
    We report a timing analysis of near-infrared (NIR), X-ray, and submillimeter data during a 3 day coordinated campaign observing Sagittarius A*. Data were collected at 4.5 µm with the Spitzer Space Telescope, 2-8 keV with ...
  • Simultaneous X-Ray and Infrared Observations of Sagittarius A*&#39;s Variability 
    Boyce, H.; Haggard, D.; Witzel, G.; Willner, Steven P.; Neilsen, J.; Hora, Joseph L.; Markoff, S.; Ponti, G.; Baganoff, F.; Becklin, E. E.; Fazio, Giovanni G.; Lowrance, P.; Morris, M. R.; Smith, H. A. (2019)
    Emission from Saggitarius A* is highly variable at both X-ray and infrared (IR) wavelengths. Observations over the last ~20 yr have revealed X-ray flares that rise above a quiescent thermal background about once per day, ...

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