Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Dębski B."'
Here we report our study on a low-mass ratio contact binary system NSVS 3198272. We subjected our multi-filter ground-based photometry to the light curve numerical modeling using a modified Wilson-Devinney code. We present three scenarios fitting to
Externí odkaz:
http://arxiv.org/abs/2410.20685
Autor:
Debski, B., Walczak, K.
Here we present the observations and the first light curve analysis of the short-period variable star NSVS 2983201. Using the light curve numerical modeling we find the best fitting model to be of shallow (ff=10%) contact binary configuration of mass
Externí odkaz:
http://arxiv.org/abs/2212.14085
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:
Debski, B.
This work studies the significance of the lightcurve intrinsic variability in the numerical modeling of contact binaries. Using synthetic light curves we are showing that the starspot-based intrinsic variability increases the apparent mass ratio by $
Externí odkaz:
http://arxiv.org/abs/2112.14823
Autor:
Lobban, A. P., Zola, S., Pajdosz-Smierciak, U., Braito, V., Nardini, E., Bhatta, G., Markowitz, A., Bachev, R., Carosati, D., Caton, D. B., Damljanovic, G., Debski, B., Haislip, J. B., Hu, S. M., Kouprianov, V., Krzesinski, J., Porquet, D., Nunez, F. Pozo, Reeves, J., Reichart, D. E.
We report on the results of a multiwavelength monitoring campaign of the bright, nearby Seyfert galaxy, Ark 120 using a ~50-day observing programme with Swift and a ~4-month co-ordinated ground-based observing campaign, predominantly using the Skynet
Externí odkaz:
http://arxiv.org/abs/2002.12348
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:
Bischoff-Kim, Agnes, Provencal, J. L., Bradley, P. A., Montgomery, M. H., Shipman, H. L., Harrold, Samuel T., Howard, B., Strickland, W., Chandler, D., Campbell, D., Arredondo, A., Linn, R., Russell, D. P., Doyle, D., Brickhouse, A., Peters, D., Kim, S. -L., Jiang, X. J., Mao, Y-N., Kusakin, A. V., Sergeev, A. V., Andreev, M., Velichko, S., Janulis, R., Pakstiene, E., Alicavus, F., Horoz, N., Zola, S., Ogloza, W., Koziel-Wierzbowska, D., Kundera, T., Jableka, D., Debski, B., Baran, A., Meingast, S., Nagel, T., Loebling, L., Heinitz, C., Hoyer, D., Bognar, Zs., Castanheira, B. G.
We report on the analysis of 34 years of photometric observations of the pulsating helium atmosphere white dwarf GD358. The complete data set includes archival data from 1982-2006, and 1195.2 hours of new observations from 2007- 2016. From this data
Externí odkaz:
http://arxiv.org/abs/1810.11708
Autor:
Bhatta, G., Stawarz, L., Markowitz, A., Balasubramaniam, K., Zola, S., Zdziarski, A. A., Jamrozy, M., Ostrowski, M., Kuzmicz, A., Ogloza, W., Drozdz, M., Siwak, M., Koziel-Wierzbowska, D., Debski, B., Kundera, T., Stachowski, G., Machalski, J., Paliya, V. S., Caton, D. B.
Here we explore the disk-jet connection in the broad-line radio quasar 4C+74.26, utilizing the results of the multiwavelength monitoring of the source. The target is unique in that its radiative output at radio wavelengths is dominated by a moderatel
Externí odkaz:
http://arxiv.org/abs/1805.06957
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:
Bhatta, G., Zola, S., Stawarz, Ł., Ostrowski, M., Winiarski, M., Ogłoza, W., Dróżdz, M., Siwak, M., Liakos, A., Kozieł-Wierzbowska, D., Gazeas, K., Debski, B., Kundera, T., Stachowski, G., Paliya, V. S.
Detection of periodicity in the broad-band non-thermal emission of blazars has so far been proven to be elusive. However, there are a number of scenarios which could lead to quasi-periodic variations in blazar light curves. For example, orbital or th
Externí odkaz:
http://arxiv.org/abs/1609.02388