Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Arcodia R"'
Autor:
Kosec, P., Kara, E., Brenneman, L., Chakraborty, J., Giustini, M., Miniutti, G., Pinto, C., Rogantini, D., Arcodia, R., Middleton, M., Sacchi, A.
Quasi-periodic eruptions (QPEs) are high-amplitude, soft X-ray bursts recurring every few hours, associated with supermassive black holes. Many interpretations for QPEs were proposed since their recent discovery in 2019, including extreme mass ratio
Externí odkaz:
http://arxiv.org/abs/2406.17105
Autor:
Arcodia, R., Linial, I., Miniutti, G., Franchini, A., Giustini, M., Bonetti, M., Sesana, A., Soria, R., Chakraborty, J., Dotti, M., Kara, E., Merloni, A., Ponti, G., Vincentelli, F.
Publikováno v:
A&A 690, A80 (2024)
Quasi-periodic eruptions (QPEs) are repeated X-ray flares from galactic nuclei. Despite some diversity in the recurrence and amplitude of eruptions, their striking regularity has motivated theorists to associate QPEs with orbital systems. Among the k
Externí odkaz:
http://arxiv.org/abs/2406.17020
Autor:
Wolf, J., Salvato, M., Belladitta, S., Arcodia, R., Ciroi, S., Di Mille, F., Sbarrato, T., Buchner, J., Hämmerich, S., Wilms, J., Collmar, W., Dwelly, T., Merloni, A., Urrutia, T., Nandra, K.
Publikováno v:
A&A 691, A30 (2024)
The SRG/eROSITA All-Sky Survey (eRASS) is expected to contain ~100 quasars that emitted their light when the universe was less than a billion years old, i.e. at z>5.6. By selection, these quasars populate the bright end of the AGN X-ray luminosity fu
Externí odkaz:
http://arxiv.org/abs/2406.05118
Autor:
Wevers, T., French, K. D., Zabludoff, A. I., Fischer, T., Rowlands, K., Guolo, M., Barba, B. Dalla, Arcodia, R., Berton, M., Bian, F., Linial, I., Miniutti, G., Pasham, D. R.
In the past five years, six quasi-periodic X-ray eruption (QPE) sources have been discovered in the nuclei of nearby galaxies. Their origin remains an open question. We present MUSE integral field spectroscopy of five QPE host galaxies to characteriz
Externí odkaz:
http://arxiv.org/abs/2406.02678
Autor:
Arcodia, R., Merloni, A., Buchner, J., Baldini, P., Ponti, G., Rau, A., Liu, Z., Nandra, K., Salvato, M.
Publikováno v:
A&A 684, L14 (2024)
Multi-wavelength extragalactic nuclear transients, particularly those detectable as multi-messengers, are among the primary drivers for the next-generation observatories. X-ray quasi-periodic eruptions (QPEs) are the most recent and perhaps most pecu
Externí odkaz:
http://arxiv.org/abs/2403.17059
Autor:
Baldini, P., Lanzuisi, G., Brusa, M., Merloni, A., Gkimisi, K., Perna, M., Lopez, I. E., Bertola, E., Igo, Z., Waddell, S., Musiimenta, B., Aydar, C., Arcodia, R., Matzeu, G. A., Luminari, A., Buchner, J., Vignali, C., Dadina, M., Comastri, A., Cresci, G., Marchesi, S., Gilli, R., Tombesi, F., Serafinelli, R.
Publikováno v:
A&A 686, A217 (2024)
Powerful outflows from active galactic nuclei (AGN) can significantly impact the gas reservoirs of their host galaxies. However, it is still unclear how these outflows can propagate from the very central regions of galaxies to their outskirts, and wh
Externí odkaz:
http://arxiv.org/abs/2402.16966
Autor:
Igo, Z., Merloni, A., Hoang, D., Buchner, J., Liu, T., Salvato, M., Arcodia, R., Bellstedt, S., Brüggen, M., Croston, J. H., de Gasperin, F., Georgakakis, A., Hardcastle, M. J., Nandra, K., Ni, Q., Pasini, T., Shimwell, T., Wolf, J.
Publikováno v:
A&A 686, A43 (2024)
Radio jets are present in a diverse sample of AGN. However, the mechanisms of jet powering are not fully understood, and it is yet unclear to what extent they obey mass-invariant scaling relations, similar to those found for the triggering and fuelli
Externí odkaz:
http://arxiv.org/abs/2402.16943
Autor:
Iwasawa, K., Liu, T., Boller, Th., Buchner, J., Li, J., Kawaguchi, T., Nagao, T., Terashima, Y., Toba, Y., Silverman, J. D., Arcodia, R., Dauser, Th., Krumpe, M., Nandra, K., Wilms, J.
We selected sources with a steep soft-X-ray-band spectrum with a photon index larger than 2.5 -- measured by eROSITA on board the Spectrum-Roentgen-Gamma (SRG) -- from the eFEDS AGN catalogue as candidates of highly accreting supermassive black holes
Externí odkaz:
http://arxiv.org/abs/2402.14135
Autor:
Nandra, K., Waddell, S. G. H., Liu, T., Buchner, J., Dwelly, T., Salvato, M., Shen, Y., Wu, Q., Arcodia, R., Boller, Th., Brunner, H., Brusa, M., Collmar, W., Comparat, J., Georgakakis, A., Grau, M., Hämmerich, S., Ibarra-Medel, H., Igo, Z., Krumpe, M., Lamer, G., Merloni, A., Musiimenta, B., Wolf, J., Assef, R. J., Bauer, F. E., Brandt, W. N., Rix, H. -W.
During its calibration and performance verification phase, the eROSITA instrument aboard the SRG satellite performed a uniform wide--area X-ray survey of approximately 140 deg$^{2}$ in a region of the sky known as the eROSITA Final Equatorial Depth S
Externí odkaz:
http://arxiv.org/abs/2401.17300
Most baryonic matter resides in the intergalactic medium (IGM), a diffuse gas primarily composed of ionized hydrogen and helium, filling the space between galaxies. Observations of such an environment are crucial to better understanding the physical
Externí odkaz:
http://arxiv.org/abs/2401.17283