Zobrazeno 1 - 10
of 575
pro vyhledávání: '"Chavushyan V, A. ."'
Autor:
Kosiba, M., Massaro, F., Paggi, A., Peña-Herazo, H. A., Masetti, N., Chavushyan, V., Bottacini, E., Werner, N.
It is currently established that the sources contributing to the cosmic X-ray background (CXB) emission are mainly nearby active galactic nuclei (AGN), in particular those that are obscured. Thus, it is important to fully identify the hard X-ray sky
Externí odkaz:
http://arxiv.org/abs/2408.05303
Autor:
Massaro, F., White, S. V., Paggi, A., Jimenez-Gallardo, A., Madrid, J. P., Mazzucchelli, C., Forman, W. R., Capetti, A., Leto, C., Garcia-Perez, A., Cheung, C. C., Chavushyan, V., Nesvadba, N. P. H., Andruchow, I., Pena-Herazo, H. A., Sani, E., Grossova, R., Reynaldi, V., Kraft, R. P., Balmaverde, B., Cellone, S.
Publikováno v:
The Astrophysical Journal Supplement Series, 268, 32 (2023)
We recently constructed the G4Jy-3CRE, a catalog of extragalactic radio sources based on the GLEAM 4-Jy (G4Jy) sample, with the aim of increasing the number of powerful radio galaxies and quasars with similar selection criteria to those of the revise
Externí odkaz:
http://arxiv.org/abs/2309.10956
Autor:
Massaro, F., White, S. V., Garcia-Perez, A., Jimenez-Gallardo, A., Capetti, A., Cheung, C. C., Forman, W. R., Mazzucchelli, C., Paggi, A., Nesvadba, N. P. H., Madrid, J. P., Andruchow, I., Cellone, S., Pena-Herazo, H. A., Grossova, R., Balmaverde, B., Sani, E., Chavushyan, V., Kraft, R. P., Reynaldi, V., Leto, C.
Publikováno v:
The Astrophysical Journal Supplement Series, 265, 32 (2023)
Since the early sixties, our view of radio galaxies and quasars has been drastically shaped by discoveries made thanks to observations of radio sources listed in the Third Cambridge catalog and its revised version (3CR). However, the largest fraction
Externí odkaz:
http://arxiv.org/abs/2308.10071
Autor:
Hernández-García, L., Panessa, F., Bruni, G., Bassani, L., Arévalo, P., Patiño-Alvarez, V. M., Tramacere, A., Lira, P., Sánchez-Sáez, P., Bauer, F. E., Chavushyan, V., Carraro, R., Förster, F., Arancibia, A. M. Muñoz, Ubertini, P.
PBC J2333.9-2343 is a giant radio galaxy at z = 0.047 with a bright central core associated to a blazar nucleus. If the nuclear blazar jet is a new phase of the jet activity, then the small orientation angle suggest a dramatic change of the jet direc
Externí odkaz:
http://arxiv.org/abs/2303.08842
We present new optical spectroscopic observations of U Geminorum obtained during a quiescent stage. We performed a radial velocity analysis of three Balmer emission lines yielding inconsistent results. Assuming that the radial velocity semi amplitude
Externí odkaz:
http://arxiv.org/abs/2303.05625
Autor:
Marchesini, E. J., Reynaldi, V., Vieyro, F., Saponara, J., Andruchow, I., López, I. E., Benaglia, P., Cellone, S. A., Masetti, N., Massaro, F., Peña-Herazo, H. A., Chavushyan, V., Combi, J. A., Acosta-Pulido, J. A., González, B. Agís, Castro-Segura, N.
Publikováno v:
A&A 670, A91 (2023)
Context. The gamma-ray emitting source WISE J141046.00+740511.2 has been associated with a Fermi-LAT detection by crossmatching with Swift/XRT data. It has shown all the canonical observational characteristics of a BL Lac source, including a power-la
Externí odkaz:
http://arxiv.org/abs/2211.08174
Autor:
Benítez, E., Jiménez-Bailón, E., Negrete, C. A., Ruschel-Dutra, D., Rodríguez-Espinosa, J. M., Cruz-González, I., Rodríguez, L. F., Chavushyan, V. H., Marziani, P., Gutiérrez, L., González-Martin, O., Jiang, B. W., D'Onofrio, M.
We have studied the nuclear region of the previously detected dual AGN system in the galaxy pair IRAS 05589+2828 and 2MASX J06021107+2828382 through new optical spectroscopy observations, along with radio and X-ray archival data. Our multiwavelength
Externí odkaz:
http://arxiv.org/abs/2208.06451
Autor:
Gupta, Alok C., Kushwaha, Pankaj, Carrasco, L., Xu, Haiguang, Wiita, Paul J., Escobedo, G., Porras, A., Recillas, E., Mayya, Y. D., Chavushyan, V., Villarroel, Beatriz, Zhang, Zhongli
We present the most extensive and well-sampled long-term multi-band near-infrared (NIR) temporal and spectral variability study of OJ 287, considered to be the best candidate binary supermassive black hole blazar. These observations were made between
Externí odkaz:
http://arxiv.org/abs/2205.03618
Autor:
Salomé, Q., Longinotti, A. L., Krongold, Y., Feruglio, C., Chavushyan, V., Vega, O., García-Burillo, S., Fuente, A., Olguín-Iglesias, A., Patiño-Álvarez, V. M., Puerari, I., Robleto-Orús, A.
The narrow-line Seyfert 1 galaxy IRAS17020+4544 is one of the few sources where both an X-ray ultra-fast outflow and a molecular outflow were observed to be consistent with energy conservation. However, IRAS17020+4544 is less massive and has a much m
Externí odkaz:
http://arxiv.org/abs/2011.08762
Autor:
Peña-Herazo, H. A., Amaya-Almazán, R. A., Massaro, F., de Menezes, R., Marchesini, E. J., Chavushyan, V., Paggi, A., Landoni, M., Ricci, F., Masetti, N., D'Abrusco, R., Cheung, C. C., La Franca, F., Smith, H. A., Milisavljevic, D., Jiménez-Bailón, E., Patiño-Álvarez, V. M., Tosti, G.
Publikováno v:
A&A 643, A103 (2020)
A significant fraction of all $\gamma$-ray sources detected by the Large Area Telescope aboard the \fer\ satellite is still lacking a low-energy counterpart. In addition, there is still a large population of $\gamma$-ray sources with associated low-e
Externí odkaz:
http://arxiv.org/abs/2009.07905