Zobrazeno 1 - 10
of 424
pro vyhledávání: '"Krumpe, P."'
Autor:
Krishnan, S., Markowitz, A. G., Krumpe, M., Homan, D., Brogan, R., Haemmerich, S., Gromadzki, M., Saha, T., Schramm, M., Reichart, D. E., Winkler, H., Waddell, S., Wilms, J., Rau, A., Liu, Z., Grotova, I.
Extreme continuum variability in AGNs can indicate extreme changes in accretion flows onto supermassive black holes. We explore the multiwavelength nature of a continuum flare in the Seyfert LCRS B040659.9$-$385922. The all-sky X-ray surveys conducte
Externí odkaz:
http://arxiv.org/abs/2409.16060
Autor:
Miyaji, T., Bravo-Navarro, B. A., Tello, J. Díaz, Krumpe, M., Herrera-Endoqui, M., Ikeda, H., Takagi, T., Oi, N., Shogaki, A., Matsuura, S., Kim, H., Malkan, M. A., Hwang, H. S., Kim, T., Ishigaki, T., Hanami, H., Kim, S. J., Ohyama, Y., Goto, T., Matsuhara, H.
Publikováno v:
A&A 689, A83 (2024)
We present a catalog of optical and infrared identifications (ID) of X-ray sources in the AKARI North Ecliptic Pole (NEP) Deep field detected with Chandra covering $\sim 0.34\,{\rm deg^{2}}$ with 0.5-2 keV flux limits ranging $\sim 2 \mathrm{-} 20\ti
Externí odkaz:
http://arxiv.org/abs/2407.13864
Autor:
Sánchez-Sáez, P., Hernández-García, L., Bernal, S., Bayo, A., Rivera, G. Calistro, Bauer, F. E., Ricci, C., Merloni, A., Graham, M. J., Cartier, R., Arévalo, P., Assef, R. J., Concas, A., Homan, D., Krumpe, M., Lira, P., Malyali, A., Martínez-Aldama, M. L., Arancibia, A. M. Muñoz, Rau, A., Bruni, G., Förster, F., Pavez-Herrera, M., Tubín-Arenas, D., Brightman, M.
The galaxy SDSS1335+0728, which had exhibited no prior optical variations during the preceding two decades, began showing significant nuclear variability in the Zwicky Transient Facility (ZTF) alert stream from December 2019 (as ZTF19acnskyy). Its be
Externí odkaz:
http://arxiv.org/abs/2406.11983
Publikováno v:
A&A 686, A57 (2024)
The connection between active galactic nuclei (AGN) and their host dark matter halos provides powerful insights into how supermassive black holes (SMBHs) grow and coevolve with their host galaxies. Here we investigate the impact of observational AGN
Externí odkaz:
http://arxiv.org/abs/2403.03978
Autor:
Arévalo, P., López-Navas, E., Martínez-Aldama, M. L., Lira, P., Bernal, S., Sánchez-Sáez, P., Salvato, M., Hernández-García, L., Ricci, C., Merloni, A., Krumpe, M.
Publikováno v:
A&A 683, L8 (2024)
We report on the finding of a newborn AGN, i.e. current AGN activity in a galaxy previously classified as non-active, and characterize its evolution. Black hole ignition event candidates were selected from a parent sample of spectrally classified non
Externí odkaz:
http://arxiv.org/abs/2402.19403
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:
Pasham, Dheeraj R., Coughlin, Eric R., Zajacek, Michal, Linial, Itai, Sukova, Petra, Nixon, Christopher J., Janiuk, Agnieszka, Sniegowska, Marzena, Witzany, Vojtech, Karas, Vladimir, Krumpe, M., Altamirano, Diego, Wevers, Thomas, Arcodia, Riccardo
Quasi-periodic Eruptions (QPEs) represent a novel class of extragalactic X-ray transients that are known to repeat at roughly regular intervals of a few hours to days. Their underlying physical mechanism is a topic of heated debate, with most models
Externí odkaz:
http://arxiv.org/abs/2402.09690
Autor:
Seppi, R., Comparat, J., Ghirardini, V., Garrel, C., Artis, E., Sanchez, A. G., Liu, A., Clerc, N., Bulbul, E., Grandis, S., Kluge, M., Reiprich, T. H., Merloni, A., Zhang, X., Bahar, Y. E., Shreeram, S., Sanders, J., Ramos-Ceja, M., Krumpe, M.
Publikováno v:
A&A 686, A196 (2024)
The spatial distribution of galaxy clusters provides a reliable tracer of the large-scale distribution of matter in the Universe. The clustering signal depends on intrinsic cluster properties and cosmological parameters. The ability of eROSITA onboar
Externí odkaz:
http://arxiv.org/abs/2402.08460
Autor:
Zhuang, Ming-Yang, Yang, Qian, Shen, Yue, Adamow, Monika, Friedel, Douglas N., Gruendl, R. A., Liu, Xin, Martini, Paul, Abbott, Timothy M. C., Anderson, Scott F., Assef, Roberto J., Bauer, Franz E., Bielby, Rich, Brandt, W. N., Burke, Colin J., Casares, Jorge, Chen, Yu-Ching, De Rosa, Gisella, Drlica-Wagner, Alex, Dwelly, Tom, Eltvedt, Alice, Alvarez, Gloria Fonseca, Fu, Jianyang, Fuentes, Cesar, Graham, Melissa L., Grier, Catherine J., Golovich, Nathan, Hall, Patrick B., Hartigan, Patrick, Horne, Keith, Koekemoer, Anton M., Krumpe, Mirko, Li, Jennifer I., Lidman, Chris, Malik, Umang, Mangian, Amelia, Merloni, Andrea, Ricci, Claudio, Salvato, Mara, Sharp, Rob, Stone, Zachary, Trilling, David E., Tucker, Brad E., Wen, Di, Wideman, Zachary, Xue, Yongquan, Yu, Zhefu, Zucker, Catherine
High-quality Extragalactic Legacy-field Monitoring (HELM) is a long-term observing program that photometrically monitors several well-studied extragalactic legacy fields with the Dark Energy Camera (DECam) imager on the CTIO 4m Blanco telescope. Sinc
Externí odkaz:
http://arxiv.org/abs/2402.06052
Autor:
Tubín-Arenas, D., Krumpe, M., Lamer, G., Haase, J., Sanders, J., Brunner, H., Homan, D., Schwope, A., Georgakakis, A., Poppenhaeger, K., Traulsen, I., König, O., Merloni, A., Gueguen, A., Strong, A., Liu, Z.
The soft X-ray instrument eROSITA on board the Spectrum-Roentgen-Gamma (SRG) observatory has successfully completed four of the eight planned all-sky surveys, detecting almost one million X-ray sources during the first survey (eRASS1). The catalog of
Externí odkaz:
http://arxiv.org/abs/2401.17305