Zobrazeno 1 - 10
of 819
pro vyhledávání: '"Boyd, D. P."'
Autor:
Merc, J., Gális, R., Wolf, M., Dubovský, P. A., Kára, J., Sims, F., Foster, J. R., Medulka, T., Boussin, C., Coffin, J. P., Buil, C., Boyd, D., Montier, J.
V503 Her was previously proposed as an eclipsing symbiotic candidate based on photometric behavior and spectroscopic appearance indicating the composite optical spectrum. To investigate its nature, we analyzed long-term photometric observations cover
Externí odkaz:
http://arxiv.org/abs/2306.12805
Autor:
Murphy-Glaysher, F. J., Darnley, M. J., Harvey, É. J., Newsam, A. M., Page, K. L., Starrfield, S., Wagner, R. M., Woodward, C. E., Terndrup, D. M., Kafka, S., Heras, T. Arranz, Berardi, P., Bertrand, E., Biernikowicz, R., Boussin, C., Boyd, D., Buchet, Y., Bundas, M., Coulter, D., Dejean, D., Diepvens, A., Dvorak, S., Edlin, J., Eenmae, T., Eggenstein, H., Fournier, R., Garde, O., Gout, J., Janzen, D., Jordanov, P., Kiiskinen, H., Lane, D., Larochelle, R., Leadbeater, R., Mankel, D., Martineau, G., Miller, I., Modic, R., Montier, J., Aimar, M. Morales, Muyllaert, E., Nogues, R. Naves, O'Keeffe, D., Oksanen, A., Pyatnytskyy, M., Rast, R., Rodgers, B., Perez, D. Rodriguez, Schorr, F., Schwendeman, E., Shadick, S., Sharpe, S., Alfaro, F. Soldán, Sove, T., Stone, G., Tordai, T., Venne, R., Vollmann, W., Vrastak, M., Wenzel, K.
V392 Persei is a known dwarf nova (DN) that underwent a classical nova eruption in 2018. Here we report ground-based optical, Swift UV and X-ray, and Fermi-LAT \gamma-ray observations following the eruption for almost three years. V392 Per is one of
Externí odkaz:
http://arxiv.org/abs/2206.03443
Autor:
Valtonen, Mauri J., Dey, Lankeswar, Zola, S., Ciprini, S., Kidger, M., Pursimo, T., Gopakumar, A., Matsumoto, K., Sadakane, K., Caton, D. B., Nilsson, K., Komossa, S., Bagaglia, M., Baransky, A., Boumis, P., Boyd, D., Castro-Tirado, A. J., Debski, B., Drozdz, M., Pérez, A. Escartin, Fiorucci, M., Garcia, F., Gazeas, K., Ghosh, S., Godunova, V., Gomez, J. L., Gredel, R., Grupe, D., Haislip, J. B., Henning, T., Hurst, G., Janík, J., Kouprianov, V. V., Lehto, H., Liakos, A., Mathur, S., Mugrauer, M., Nogues, R. Naves, Nucciarelli, G., Ogloza, W., Ojha, D. K., Pajdosz-Śmierciak, U., Pascolini, S., Poyner, G., Reichart, D. E., Rizzi, N., Roncella, F., Sahu, D. K., Sillanpää, A., Simon, A., Siwak, M., Alfaro, F. C. Soldán, Sonbas, E., Tosti, G., Vasylenko, V., Webb, J. R., Zielinski, P.
OJ 287 is a BL Lacertae type quasar in which the active galactic nucleus (AGN) outshines the host galaxy by an order of magnitude. The only exception to this may be at minimum light when the AGN activity is so low that the host galaxy may make quite
Externí odkaz:
http://arxiv.org/abs/2205.15589
Autor:
Pala, A. F., Gänsicke, B. T., Belloni, D., Parsons, S. G., Marsh, T. R., Schreiber, M. R., Breedt, E., Knigge, C., Sion, E. M., Szkody, P., Townsley, D., Bildsten, L., Boyd, D., Cook, M. J., De Martino, D., Godon, P., Kafka, S., Kouprianov, V., Long, K. S., Monard, B., Myers, G., Nelson, P., Nogami, D., Oksanen, A., Pickard, R., Poyner, G., Reichart, D. E., Perez, D. Rodriguez, Shears, J., Stubbings, R., Toloza, O.
We report on the masses ($M_\mathrm{WD}$), effective temperatures ($T_\mathrm{eff}$) and secular mean accretion rates ($\langle \dot{M} \rangle$) of 43 cataclysmic variable (CV) white dwarfs, 42 of which were obtained from the combined analysis of th
Externí odkaz:
http://arxiv.org/abs/2111.13706
Autor:
Pieńkowski, D., Gałan, C., Tomov, T., Gazeas, K., Wychudzki, P., Mikołajewski, M., Kubicki, D., Staels, B., Zoła, S., Pakońska, P., Dȩbski, B., Kundera, T., Ogłoza, W., Dróżdż, M., Baran, A., Winiarski, M., Siwak, M., Dimitrov, D., Kjurkchieva, D., Marchev, D., Armiński, A., Miller, I., Kołaczkowski, Z., Moździerski, D., Zahajkiewicz, E., Bruś, P., Pigulski, A., Smela, T., Conseil, E., Boyd, D., Conidis, G. J., Plauchu-Frayn, I., Heras, T. A., Kardasis, E., Biskupski, M., Kneip, R., Hambálek, L., Pribulla, T., Kundra, E., Nedoroščik, J., Lopatovský, J., Garai, Z., Rodriguez, D., Kamiński, T., Dubois, F., Logie, L., Blanco, A. Capetillo, Kankiewicz, P., Świerczyński, E., Martignoni, M., Sergey, I., Qvam, J. Kare Trandem, Semkov, E., Ibryamov, S., Peneva, S., Carballo, J. -L. Gonzalez, Ribeiro, J., Dean, S., Apostolovska, G., Donchev, Z., Corp, L., McDonald, P., Rodriguez, M., Sanchez, A., Wiersema, K., Menke, J., Richardson, N.
Context. EE Cep is one of few eclipsing binary systems with a dark, dusty disk around an invisible object similar to {\epsilon} Aur. The system is characterized by grey and asymmetric eclipses every 5.6 yr, with a significant variation in their photo
Externí odkaz:
http://arxiv.org/abs/2001.05891
Autor:
Henze, M., Darnley, M. J., Williams, S. C., Kato, M., Hachisu, I., Anupama, G. C., Arai, A., Boyd, D., Burke, D., Chinetti, K., Ciardullo, R., Cook, L. M., Cook, M. J., Erdman, P., Gao, X., Harris, B., Hartmann, D. H., Hornoch, K., Horst, J. Chuck, Hounsell, R., Husar, D., Itagaki, K., Kabashima, F., Kafka, S., Kaur, A., Kiyota, S., Kojiguchi, N., Kucakova, H., Kuramoto, K., Maehara, H., Mantero, A., Masci, F. J., Matsumoto, K., Naito, H., Ness, J. -U., Nishiyama, K., Oksanen, A., Osborne, J. P., Page, K. L., Paunzen, E., Pavana, M., Pickard, R., Prieto-Arranz, J., Rodriguez-Gil, P., Sala, G., Sano, Y., Shafter, A. W., Sugiura, Y., Tan, H., Tordai, T., Vratil, J., Wagner, R. M., Watanabe, F., Williams, B. F., Bode, M. F., Bruno, A., Buchheim, B., Crawford, T., Goff, B., Hernanz, M., Igarashi, A. S., Jose, J., Motta, M., O'Brien, T. J., Oswalt, T., Poyner, G., Ribeiro, V. A. R. M., Sabo, R., Shara, M. M., Shears, J., Starkey, D., Starrfield, S., Woodward, C. E.
Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This unprecedented frequency indicates an extreme object, with a massive white dwarf and a high accretion rate, which is the most pr
Externí odkaz:
http://arxiv.org/abs/1803.00181
Autor:
Goyal, A., Stawarz, L., Zola, S., Marchenko, V., Soida, M., Nilsson, K., Ciprini, S., Baran, A., Ostrowski, M., Wiita, P. J., Gopal-Krishna, Siemiginowska, A., Sobolewska, M., Jorstad, S., Marscher, A., Hovatta, M. F. Aller H. D. Aller T., Caton, D. B., Reichart, D., Matsumoto, K., Sadakane, K., Gazeas, K., Kidger, M., Piirola, V., Jermak, H., Alicavus, F., Baliyan, K. S., Baransky, A., Berdyugin, A., Blay, P., Boumis, P., Boyd, D., Bufan, Y., Torrent, M. Campas, Campos, F., Gomez, J. Carrillo, Dalessio, J., Debski, B., Dimitrov, D., Drozdz, M., Er, H., Erdem, A., Perez, A. Escartin, Ramazani, V. Fallah, Filippenko, A. V., Gafton, E., Garcia, F., Godunova, V., Pinilla, F. Gomez, Gopinathan, M., Haislip, J. B., Haque, S., Harmanen, J., Hudec, R., Hurst, G., Ivarsen, K. M., Joshi, A., Kagitani, M., Karaman, N., Karjalainen, R., Kaur, N., l-Wierzbowska, D. Kozie, Kuligowska, E., Kundera, T., Kurowski, S., Kvammen, A., LaCluyze, A. P., Lee, B. C., Liakos, A., de Haro, J. Lozano, Mohammed, I., Moore, J. P., Mugrauer, M., Nogues, R. Naves, Neely, A. W., Ogloza, W., Okano, S., Pajdosz, U., Pandey, J. C., Perri, M., Poyner, G., Provencal, J., Pursimo, T., Raj, A., Rajkumar, B., Reinthal, R., Reynolds, T., Saario, J., Sadegi, S., Sakanoi, T., Gonzalez, J. L. Salto, Sameer, Heung, A., Simon, O., Siwak, M., Schweyer, T., Alfaro, F. C. Soldan, Sonbas, E., Strobl, J., Takalo, L. O., Espasa, L. Tremosa, Valdes, J. R., Vasylenko, V. V., Verrecchia, F., Webb, J. R., Yoneda, M., Zejmo, M., Zheng, W., Zielinski, P., Janik, J., Chavushyan, V., Cheung, C. C., Giroletti, M.
We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy $\gamma$-rays, {\it Swift}-XRT in X-rays, several ground-based telescopes and the {\it Kepler} satellite
Externí odkaz:
http://arxiv.org/abs/1709.04457
Autor:
Skopal, A., Shugarov, S. Yu., Sekeráš, M., Wolf, M., Tarasova, T. N., Teyssier, F., Fujii, M., Guarro, J., Garde, O., Graham, K., Lester, T., Bouttard, V., Lemoult, T., Sollecchia, U., Montier, J., Boyd, D.
Publikováno v:
A&A 604, A48 (2017)
AG Peg is known as the slowest symbiotic nova, which experienced its nova-like outburst around 1850. After 165 years, during June of 2015, it erupted again showing characteristics of the Z And-type outburst. The primary objective is to determine basi
Externí odkaz:
http://arxiv.org/abs/1705.00076
Autor:
Pala, A. F., Gänsicke, B. T., Townsley, D., Boyd, D., Cook, M. J., De Martino, D., Godon, P., Haislip, J. B., Henden, A. A., Hubeny, I., Ivarsen, K. M., Kafka, S., Knigge, C., LaCluyze, A. P., Long, K. S., Marsh, T. R., Monard, B., Moore, J. P., Myers, G., Nelson, P., Nogami, D., Oksanen, A., Pickard, R., Poyner, G., Reichart, D. E., Perez, D. Rodriguez, Schreiber, M. R., Shears, J., Sion, E. M., Stubbings, R., Szkody, P., Zorotovic, M.
Publikováno v:
MNRAS, Volume 466, pages 2855-2878 (2017)
We present HST spectroscopy for 45 cataclysmic variables (CVs), observed with HST/COS and HST/STIS. For 36 CVs, the white dwarf is recognisable through its broad Ly$\alpha$ absorption profile and we measure the white dwarf effective temperatures ($T_
Externí odkaz:
http://arxiv.org/abs/1701.02738
Autor:
Boyd, D. R. S., de Miguel, E., Patterson, J., Wood, M. A., Barrett, D., Boardman, J., Brettman, O., Cejudo, D., Collins, D., Cook, L. M., Cook, M. J., Foote, J. L., Fried, R., Gomez, T. L., Hambsch, F. -J., Jones, J. L., Kemp, J., Koff, R., Koppelman, M., Krajci, T., Lemay, D., Martin, B., McClusky, J. V., Menzies, K., Messier, D., Roberts, G., Robertson, J., Rock, J., Sabo, R., Skillman, D., Ulowetz, J., Vanmunster, T.
We present an analysis of photometric observations of the eclipsing novalike variable DW UMa made by the CBA consortium between 1999 and 2015. Analysis of 372 new and 260 previously published eclipse timings reveals a 13.6 year period or quasi-period
Externí odkaz:
http://arxiv.org/abs/1612.06883