Zobrazeno 1 - 10
of 1 400
pro vyhledávání: '"Ilić D."'
Autor:
Komossa, S., Grupe, D., Marziani, P., Popovic, L. C., Marceta-Mandic, S., Bon, E., Ilic, D., Kovacevic, A. B., Kraus, A., Haiman, Z., Petrecca, V., De Cicco, D., Dimitrijevic, M. S., Sreckovic, V. A., Dojcinovic, J. Kovacevic, Pannikkote, M., Bon, N., Gupta, K. K., Iacob, F.
The extremes of Active Galactic Nuclei (AGN) variability offer valuable new insights into the drivers and physics of AGN. We discuss some of the most extreme cases of AGN variability; the highest amplitudes, deep minima states, extreme spectral state
Externí odkaz:
http://arxiv.org/abs/2408.00089
Autor:
Wiseman, P., Williams, R. D., Arcavi, I., Galbany, L., Graham, M. J., Hönig, S., Newsome, M., Subrayan, B., Sullivan, M., Wang, Y., Ilić, D., Nicholl, M., Oates, S., Petrushevska, T., Smith, K. W.
We present a search for luminous, long-duration ambiguous nuclear transients (ANTs) similar to the unprecedented discovery of the extreme, ambiguous event AT2021lwx with a $>150$ d rise time and luminosity $10^{45.7}$ erg s$^{-1}$. We use the Lasair
Externí odkaz:
http://arxiv.org/abs/2406.11552
Publikováno v:
Praxis Medica, Vol 43, Iss 2, Pp 31-36 (2014)
In our culture, consuming of alcohol drinks is generally tolerated. The alcohol drinks is easily available and even represent a particular pattern of behavior. Young populations are at risk for alcohol abuse while most of them are beginning to experi
Externí odkaz:
https://doaj.org/article/0e5b9be491b74afe8103eaa46f95b12c
Autor:
Shapovalova A. I., Popović L. Č., Ilić D., Kovačević A., Kovačević J., Burenkov A. N., Chavushyan V. H.
Publikováno v:
Open Astronomy, Vol 20, Iss 3, Pp 476-480 (2011)
We present preliminary results of the long-term spectral monitoring of two active galactic nuclei with different broad line shapes: Ark 564 and Arp 102B. Ark 564 is a bright nearby narrow-line Syfert 1 (NLS1) galaxy with relatively narrow permitted o
Externí odkaz:
https://doaj.org/article/06b4480f0cd54b118d5212c25dcfcf9b
Publikováno v:
Open Astronomy, Vol 20, Iss 3, Pp 459-462 (2011)
We present observations of the H I tidal arm near a dwarf galaxy NGC 3077 (member of the M81 galaxy group) in the narrow-band [S II] and Hα filters. Observations were carried out in 2011 March with the 2 m RCC telescope at the NAO Rozhen, Bulgaria.
Externí odkaz:
https://doaj.org/article/5b2cc8ff92e04906a0db4bf4d0375d6d
Publikováno v:
Open Astronomy, Vol 20, Iss 3, Pp 442-447 (2011)
In this contribution we report on the study of the optical emission lines and X-ray spectra of a sample of Type 1 AGNs, collected from the SDSS database and observed by the XMM-Newton satellite. Using different instruments onboard XMM, we identify th
Externí odkaz:
https://doaj.org/article/8b2d4400da2b4e8aa88547ffa44f7b30
Publikováno v:
Serbian Astronomical Journal, Vol 2009, Iss 179, Pp 87-94 (2009)
We present observations of the nearby tidal dwarf galaxy Holmberg IX in M81 galaxy group in narrow band [SII] and Hα filters, carried out in March and November 2008 with the 2m RCC telescope at NAO Rozhen, Bulgaria. Our search for resident supernova
Externí odkaz:
https://doaj.org/article/7e9328cec07b445b8b4e3a67a4957061
Autor:
Petrushevska, T., Leloudas, G., Ilic, D., Bronikowski, M., Charalampopoulos, P., Jaisawal, G. K., Paraskeva, E., Pursiainen, M., Rakic, N., Schulze, S., Taggart, K., Wedderkopp, C. K., Anderson, J. P., de Boer, T., Chambers, K., Chen, T. W., Damljanovic, G., Fraser, M., Gao, H., Gomboc, A., Gromadzki, M., Ihanec, N., Maguire, K., Marcun, B., Muller-Bravo, T. E., Nicholl, M., Onori, F., Reynolds, T. M., Smartt, S. J., Sollerman, J., Smith, K. W., Wevers, T., Wyrzykowski, L.
Thanks to the advent of large-scale optical surveys, a diverse set of flares from the nuclear regions of galaxies has recently been discovered. These include the disruption of stars by supermassive black holes at the centers of galaxies - nuclear tra
Externí odkaz:
http://arxiv.org/abs/2211.17097
Publikováno v:
Measurement Science Review, Vol 8, Iss 1, Pp 18-21 (2008)
Externí odkaz:
https://doaj.org/article/193e7597b393400890eb998f2b268f3e
Publikováno v:
Serbian Astronomical Journal, Vol 2007, Iss 174, Pp 73-77 (2007)
An analysis of the relation between radio surface brightness and diameter, so-called Σ − D relation, for planetary nebulae (PNe) is presented: i) the theoretical Σ − D relation for the evolution of bremsstrahlung surface brightness is derived;
Externí odkaz:
https://doaj.org/article/b5cbce71c4aa43ebb6c2422b280a4a18