Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Malyali A"'
Autor:
Saxena, A., Salvato, M., Roster, W., Shirley, R., Buchner, J., Wolf, J., Kohl, C., Starck, H., Dwelly, T., Comparat, J., Malyali, A., Krippendorf, S., Zenteno, A., Lang, D., Schlegel, D., Zhou, R., Dey, A., Valdes, F., Myers, A., Assef, R. J., Ricci, C., Temple, M. J., Merloni, A., Koekemoer, A., Anderson, S. F., Morrison, S., Liu, X., Nandra, K.
Publikováno v:
A&A 690, A365 (2024)
(abridged)Photometric redshifts for AGN (galaxies hosting an accreting supermassive black hole in their center) are notoriously challenging and currently better computed via SED fitting, assuming that deep photometry for many wavelengths is available
Externí odkaz:
http://arxiv.org/abs/2407.10788
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
Autor:
Pasham, Dheeraj R., Tombesi, Francesco, Sukova, Petra, Zajacek, Michal, Rakshit, Suvendu, Coughlin, Eric, Kosec, Peter, Karas, Vladimir, Masterson, Megan, Mummery, Andrew, Holoien, Thomas W. -S., Guolo, Muryel, Hinkle, Jason, Ripperda, Bart, Witzany, Vojtech, Shappee, Ben, Kara, Erin, Horesh, Assaf, van Velzen, Sjoert, Sfaradi, Itai, Kaplan, David L., Burger, Noam, Murphy, Tara, Remillard, Ronald, Steiner, James F., Wevers, Thomas, Arcodia, Riccardo, Buchner, Johannes, Merloni, Andrea, Malyali, Adam, Fabian, Andy, Fausnaugh, Michael, Daylan, Tansu, Altamirano, Diego, Payne, Anna, Ferrara, E. C.
Binaries containing a compact object orbiting a supermassive black hole are thought to be precursors of gravitational wave events, but their identification has been extremely challenging. Here, we report quasi-periodic variability in X-ray absorption
Externí odkaz:
http://arxiv.org/abs/2402.10140
Autor:
Goodwin, A. J., Anderson, G. E., Miller-Jones, J. C. A., Malyali, A., Grotova, I., Homan, D., Kawka, A., Krumpe, M., Liu, Z., Rau, A.
We present an extensive radio monitoring campaign of the nuclear transient eRASSt J234403-352640 with the Australia Telescope Compact Array, one of the most X-ray luminous TDE candidates discovered by the SRG/eROSITA all-sky survey. The observations
Externí odkaz:
http://arxiv.org/abs/2401.17286
Autor:
Arcodia, R., Liu, Z., Merloni, A., Malyali, A., Rau, A., Chakraborty, J., Goodwin, A., Buckley, D., Brink, J., Gromadzki, M., Arzoumanian, Z., Buchner, J., Kara, E., Nandra, K., Ponti, G., Salvato, M., Anderson, G., Baldini, P., Grotova, I., Krumpe, M., Maitra, C., Miller-Jones, J. C. A., Ramos-Ceja, M. E.
X-ray quasi-periodic eruptions (QPEs) are a novel addition to the group of extragalactic transients. In this work, we report the discovery of two further galaxies showing QPEs, eRO-QPE3 and eRO-QPE4, with the eROSITA X-ray telescope on board the Spec
Externí odkaz:
http://arxiv.org/abs/2401.17275
Autor:
Merloni, A., Lamer, G., Liu, T., Ramos-Ceja, M. E., Brunner, H., Bulbul, E., Dennerl, K., Doroshenko, V., Freyberg, M. J., Friedrich, S., Gatuzz, E., Georgakakis, A., Haberl, F., Igo, Z., Kreykenbohm, I., Liu, A., Maitra, C., Malyali, A., Mayer, M. G. F., Nandra, K., Predehl, P., Robrade, J., Salvato, M., Sanders, J. S., Stewart, I., Tubín-Arenas, D., Weber, P., Wilms, J., Arcodia, R., Artis, E., Aschersleben, J., Avakyan, A., Aydar, C., Bahar, Y. E., Balzer, F., Becker, W., Berger, K., Boller, T., Bornemann, W., Brüggen, M., Brusa, M., Buchner, J., Burwitz, V., Camilloni, F., Clerc, N., Comparat, J., Coutinho, D., Czesla, S., Dannhauer, S. M., Dauner, L., Dauser, T., Dietl, J., Dolag, K., Dwelly, T., Egg, K., Ehl, E., Freund, S., Friedrich, P., Gaida, R., Garrel, C., Ghirardini, V., Gokus, A., Grünwald, G., Grandis, S., Grotova, I., Gruen, D., Gueguen, A., Hämmerich, S., Hamaus, N., Hasinger, G., Haubner, K., Homan, D., Chitham, J. Ider, Joseph, W. M., Joyce, A., König, O., Kaltenbrunner, D. M., Khokhriakova, A., Kink, W., Kirsch, C., Kluge, M., Knies, J., Krippendorf, S., Krumpe, M., Kurpas, J., Li, P., Liu, Z., Locatelli, N., Lorenz, M., Müller, S., Magaudda, E., Mannes, C., McCall, H., Meidinger, N., Michailidis, M., Migkas, K., Muñoz-Giraldo, D., Musiimenta, B., Nguyen-Dang, N. T., Ni, Q., Olechowska, A., Ota, N., Pacaud, F., Pasini, T., Perinati, E., Pires, A. M., Pommranz, C., Ponti, G., Poppenhaeger, K., Pühlhofer, G., Rau, A., Reh, M., Reiprich, T. H., Roster, W., Saeedi, S., Santangelo, A., Sasaki, M., Schmitt, J., Schneider, P. C., Schrabback, T., Schuster, N., Schwope, A., Seppi, R., Serim, M. M., Shreeram, S., Sokolova-Lapa, E., Starck, H., Stelzer, B., Stierhof, J., Suleimanov, V., Tenzer, C., Traulsen, I., Trümper, J., Tsuge, K., Urrutia, T., Veronica, A., Waddell, S. G. H., Willer, R., Wolf, J., Yeung, M. C. H., Zainab, A., Zangrandi, F., Zhang, X., Zhang, Y., Zheng, X.
Publikováno v:
A&A, vol. 682, A34 (2024)
The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sky maps of an unprecedented depth. Here we present catalogues of both p
Externí odkaz:
http://arxiv.org/abs/2401.17274
Autor:
Liu, Zhu, Ryu, Taeho, Goodwin, A. J., Rau, A., Homan, D., Krumpe, M., Merloni, A., Grotova, I., Anderson, G. E., Malyali, A., Miller-Jones, J. C. A.
Publikováno v:
A&A 683, L13 (2024)
In this letter, we present the results from further X-ray and UV observations of the nuclear transient eRASSt J045650.3-203750 (hereafter J0456-20). We detected five repeating X-ray and UV flares from J0456-20, making it one of the most promising rep
Externí odkaz:
http://arxiv.org/abs/2401.14091
Autor:
Masterson, Megan, De, Kishalay, Panagiotou, Christos, Kara, Erin, Arcavi, Iair, Eilers, Anna-Christina, Frostig, Danielle, Gezari, Suvi, Grotova, Iuliia, Liu, Zhu, Malyali, Adam, Meisner, Aaron M., Merloni, Andrea, Newsome, Megan, Rau, Arne, Simcoe, Robert A., van Velzen, Sjoert
Most tidal disruption events (TDEs) are currently found in time-domain optical and soft X-ray surveys, both of which are prone to significant obscuration. The infrared (IR), however, is a powerful probe of dust-enshrouded environments, and hence, we
Externí odkaz:
http://arxiv.org/abs/2401.01403
Autor:
Malyali, A., Rau, A., Bonnerot, C., Goodwin, A. J., Liu, Z., Anderson, G. E., Brink, J., Buckley, D. A. H., Merloni, A., Miller-Jones, J. C. A., Grotova, I., Kawka, A.
We report on the SRG/eROSITA detection of ultra-soft ($kT=47^{+5}_{-5}$ eV) X-ray emission ($L_{\mathrm{X}}=2.5^{+0.6}_{-0.5} \times 10^{43}$ erg s$^{-1}$) from the tidal disruption event (TDE) candidate AT 2022dsb $\sim$14 days before peak optical b
Externí odkaz:
http://arxiv.org/abs/2309.16336
Autor:
Homan, D., Krumpe, M., Markowitz, A., Saha, T., Gokus, A., Partington, E., Lamer, G., Malyali, A., Liu, Z., Rau, A., Grotova, I., Cackett, E. M., Buckley, D. A. H., Ciroi, S., Di Mille, F., Gendreau, K., Gromadzki, M., Krishnan, S., Schramm, M., Steiner, J. F.
In November 2020, a new, bright object, eRASSt J234402.9$-$352640, was discovered in the second all-sky survey of SRG/eROSITA. The object brightened by a factor of at least 150 in 0.2--2.0 keV flux compared to an upper limit found six months previous
Externí odkaz:
http://arxiv.org/abs/2302.06989