Zobrazeno 1 - 10
of 1 458
pro vyhledávání: '"Ness, J"'
Autor:
Orio, M., Melicherčík, M., Ciroi, S., Canton, V., Aydi, E., Buckley, D. A. H., Dobrotka, A., Luna, G. J. M., Ness, J.
We present X-ray and optical observations of nova V407 Lup (Nova Lup 2016), previously well monitored in outburst, as it returned to quiescent accretion. The X-ray light curve in 2020 February revealed a clear flux modulation with a stable period of
Externí odkaz:
http://arxiv.org/abs/2408.03779
Autor:
Marino, A., Yang, H., Zelati, F. Coti, Rea, N., Guillot, S., Jaisawal, G. K., Maitra, C., Haberl, F., Kuulkers, E., Yuan, W., Feng, H., Tao, L., Jin, C., Sun, H., Zhang, W., Chen, W., Heuvel, E. P. J. van den, Soria, R., Zhang, B., Weng, S. -S., Ji, L., Zhang, G. B., Pan, X., Lv, Z., Zhang, C., Ling, Z., Chen, Y., Jia, S., Liu, Y., Ness, J. -U., Cheng, H. Q., Li, D. Y., Gendreau, K. C., Ng, M., Strohmayer, T. E.
On May 27 2024, the Wide-field X-ray Telescope onboard the Einstein Probe (EP) mission detected enhanced X-ray emission from a new transient source in the Small Magellanic Cloud (SMC) during its commissioning phase. Prompt follow-up with the EP Follo
Externí odkaz:
http://arxiv.org/abs/2407.21371
AIMS: We present an analysis of an XMM-Newton observation of the dwarf novae V1504 Cyg during the decline from an outburst. Our goal is to search for evidence for an evaporated X-ray corona. Such a corona can be understood as an optically thin geomet
Externí odkaz:
http://arxiv.org/abs/2304.11162
Autor:
Dunn, W., Berland, G., Roussos, E., Clark, G., Kollmann, P., Turner, D., Feldman, C., Stallard, T., Branduardi-Raymont, G., Woodfield, E. E., Rae, I. J., Ray, L. C., Carter, J. A., Lindsay, S. T., Yao, Z., Marshall, R., A., A. N. Jaynes, Ezoe, Y., Numazawa, M., Hospodarsky, G. B., Wu, X., Weigt, D. M., Jackman, C. M., Mori, K., Nénon, Q., Desai, R. T, Blum, L. W., Nordheim, T. A., Ness, J. U., Bodewits, D., Kimura, T., Li, W., Smith, H. T., Millas, D., Wibisono, A. D., Achilleos, N., Koutroumpa, D., McEntee, S. C., Collier, H., Bhardwaj, A., Martindale, A., Wolk, S. J., Badman, S. V., Kraft, R. P.
Jupiter's magnetosphere is considered to be the most powerful particle accelerator in the Solar System, accelerating electrons from eV to 70 MeV and ions to GeV energies. How electromagnetic processes drive energy and particle flows, producing and re
Externí odkaz:
http://arxiv.org/abs/2303.02161
High Resolution X-ray Spectra of RS Ophiuchi (2006 and 2021): Revealing the cause of SSS variability
Autor:
Ness, J. -U., Beardmore, A. P., Bode, M. F., Darnley, M. J., Dobrotka, A., Drake, J. J., Magdolen, J., Munari, U., Osborne, J. P., Orio, M., Page, K. L., Starrfield, S.
Publikováno v:
A&A 670, A131 (2023)
Swift observed the SSS phase in RS Oph much fainter in 2021 than in 2006, and we compare an XMM-Newton grating spectrum on day 55.6 in 2021 (2021d55.6) to SSS Chandra and XMM-Newton grating spectra from days 2006d39.7, 2006d54, and 2006d66.9. We pres
Externí odkaz:
http://arxiv.org/abs/2212.07169
Autor:
Page, K. L., Beardmore, A. P., Osborne, J. P., Munari, U., Ness, J. -U., Evans, P. A., Bode, M. F., Darnley, M. J., Drake, J. J., Kuin, N. P. M., O'Brien, T. J., Orio, M., Shore, S. N., Starrfield, S., Woodward, C. E.
On 2021 August 8, the recurrent nova RS Ophiuchi erupted again, after an interval of 15.5 yr. Regular monitoring by the Neil Gehrels Swift Observatory began promptly, on August 9.9 (0.37 day after the optical peak), and continued until the source pas
Externí odkaz:
http://arxiv.org/abs/2205.03232
Autor:
Ness, J. -U., Beardmore, A. P., Bezak, P., Dobrotka, A., Drake, J. J., Meulen, B. Vander, Osborne, J. P., Orio, M., Page, K. L., Pinto, C., Singh, K. P., Starrfield, S.
Publikováno v:
A&A 658, A169 (2022)
The 30-year recurrent symbiotic nova V3890 Sgr exploded 2019 August 28 and was observed with multiple X-ray telescopes. An XMM-Newton observation during the SSS phase captured a high degree of X-ray variability including a deep dip in the middle of t
Externí odkaz:
http://arxiv.org/abs/2111.00331
Autor:
Page, K. L., Kuin, N. P. M., Beardmore, A. P., Walter, F. M., Osborne, J. P., Markwardt, C. B., Ness, J. -U., Orio, M., Sokolovsky, K. V.
V3890 Sgr is a recurrent nova which has been seen in outburst three times so far, with the most recent eruption occurring on 2019 August 27 UT. This latest outburst was followed in detail by the Neil Gehrels Swift Observatory, from less than a day af
Externí odkaz:
http://arxiv.org/abs/2010.01001
Autor:
Ness, J. -U., Fernández, C. Sánchez, Ibarra, A., Saxton, R., Salgado, J., Kuulkers, E., Kretschmar, P., Ehle, M., Salazar, E., Gabriel, C., Perdikeas, M.
Publikováno v:
Journal of the Italian Astronomical Society 2019
Context. Towards the multimessenger era, the scientific demand for simultaneous observations with different facilities is continuously increasing. The main challenges of coordinating observations is the determination of common visibility and respecti
Externí odkaz:
http://arxiv.org/abs/1903.10732
Autor:
Aydi, E., Orio, M., Beardmore, A. P., Ness, J. -U., Page, K. L., Kuin, N. P. M., Walter, F. M., Buckley, D. A. H., Mohamed, S., Whitelock, P., Osborne, J. P., Strader, J., Chomiuk, L., Darnley, M. J., Dobrotka, A., Kniazev, A., Miszalski, B., Myers, G., Ospina, N., Henze, M., Starrfield, S., Woodward, C. E.
We present a detailed study of the 2016 eruption of nova V407 Lupi (ASASSN-16kt), including optical, near-infrared, X-ray, and ultraviolet data from SALT, SMARTS, SOAR, Chandra, Swift, and XMM-Newton. Timing analysis of the multiwavelength light-curv
Externí odkaz:
http://arxiv.org/abs/1807.00706