Zobrazeno 1 - 10
of 557
pro vyhledávání: '"Bon E"'
Publikováno v:
Žurnal Grodnenskogo Gosudarstvennogo Medicinskogo Universiteta, Vol 18, Iss 5, Pp 550-555 (2020)
Objective. To analyze the changes in the size and shape of perikaryons and the degree of cytoplasm chromatophilia of the rat hippocampal and parietal cortex neurons at different periods after the modeling of total cerebral ischemia. Material and Meth
Externí odkaz:
https://doaj.org/article/1c2f251fdbd248bf8fb629b36d1fcabd
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:
Xu, D. W., Komossa, S., Grupe, D., Wang, J., Xin, L. P., Han, X. H., Wei, J. Y., Bai, J. Y., Bon, E., Cangemi, F., Cordier, B., Dennefeld, M., Gallo, L. C., Kollatschny, W., Kong, De-Feng, Ochmann, M. W., Qiu, Y. L., Schartel, N.
We discuss applications of the study of the new and barely explored class of changing-look (CL) narrow-line Seyfert 1 (NLS1) galaxies and comment on their detection with the space mission SVOM (Space Variable Objects Monitor). We highlight the case o
Externí odkaz:
http://arxiv.org/abs/2401.10600
Autor:
Bon E.
Publikováno v:
Serbian Astronomical Journal, Vol 2008, Iss 177, Pp 9-13 (2008)
The disk emission in the single peaked Broad Emission Lines (BELs) of Active Galactic Nuclei (AGNs) is difficult to detect. In order to find the disk traces in BELs the line profiles were simulated by the simplified model consisting of two components
Externí odkaz:
https://doaj.org/article/80993d23e85f461b9fbcfa21f742736a
Autor:
Marziani, P., del Olmo, A., Negrete, C. A., Dultzin, D., Piconcelli, E., Vietri, G., Martinez-Aldama, M. L., D'Onofrio, Mauro, Bon, E., Bon, N., Machado, A. Deconto, Stirpe, G. M., Rios, T. Buendia
The identification of a virial broadening estimator in the quasar UV rest frame suitable for black hole mass computation at high redshift has become an important issue. We compare the HI Balmer H-beta line width to the ones of two intermediate ioniza
Externí odkaz:
http://arxiv.org/abs/2205.07034
Publikováno v:
Serbian Astronomical Journal, Vol 2000, Iss 162, Pp 7-33 (2000)
We present here the Akn 120 Hβ line profiles from 97 spectra observed from 1977 till 1990 at Crimean Astrophysical Observatory (Appendix 1). The Hβ line has been fitted with three broad and one narrow Gaussian throughout the whole considered period
Externí odkaz:
https://doaj.org/article/8326ea81f16e479eaac8cfc6be7a9f63
Publikováno v:
Serbian Astronomical Journal, Vol 1998, Iss 158, Pp 43-53 (1998)
Here we have juxtaposed two distant cosmic locations of the Sun and AGN where neutral hydrogen appears in a close connection with hot coronas. Besides the solar photosphere, chromosphere and prominences where the presence of neutral hydrogen is we
Externí odkaz:
https://doaj.org/article/2a4b092c25d14f14888d01deef7b028a
Autor:
Marziani, P., Bon, E., Bon, N., D'Onofrio, M., Punsly, B., Sniegowska, M., Czerny, B., Panda, S., Aldama, M. L. Martinez, del Olmo, A., Deconto-Machado, A., Negrete, C. A., Dultzin, D., Buendia, T., Garnica, K.
The last few years have seen the confirmation of several trends associated with the quasar main sequence. The idea of a main sequence for quasars is relatively recent, and its full potential for the observational classification and contextualization
Externí odkaz:
http://arxiv.org/abs/2111.04140
Publikováno v:
A&A 641, A167 (2020)
Changing-look phenomenon observed now in a growing number of active galaxies challenges our understanding of the accretion process close to a black hole. We propose a simple explanation for the sources where multiple semi-periodic outbursts are obser
Externí odkaz:
http://arxiv.org/abs/2007.06441
We analyze the optical properties of Radio-Loud quasars along the Main Sequence (MS) of quasars. A sample of 355 quasars selected on the basis of radio detection was obtained by cross-matching the FIRST survey at 20cm and the SDSS DR12 spectroscopic
Externí odkaz:
http://arxiv.org/abs/2004.12748