Zobrazeno 1 - 10
of 1 709
pro vyhledávání: '"Gallo, L. A."'
Autor:
Buhariwalla, Margaret Z., Gallo, L. C., Mao, J., Jiang, J., Pothier-Bogoslowski, L. K., Järvelä, E., Komossa, S., Grupe, D.
Previous X-ray works on Mrk 1239 have revealed a complex Narrow Line Seyfert 1 (NLS1) that exhibits substantial absorption and strong emission from both collisional (CIE) and photoionized (PIE) plasmas. Here, we report on deep-pointed observations wi
Externí odkaz:
http://arxiv.org/abs/2405.08785
Autor:
Juráňová, A., Costantini, E., Kriss, G. A., Mehdipour, M., Brandt, W. N., Di Gesu, L., Fabian, A. C., Gallo, L., Giustini, M., Rogantini, D., Wilkins, D. R.
We present an analysis of the HST COS spectrum of IZw1 aiming to probe the absorbing medium associated with the active galactic nucleus (AGN). We fitted the emission spectrum and performed spectral analysis of the identified absorption features to de
Externí odkaz:
http://arxiv.org/abs/2404.10060
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
In this work, we examine the application of the wavelet transform to the X-ray timing analyses of active galactic nuclei (AGN) and quasi-periodic eruption sources (QPEs). Several scenarios are simulated to test the effectiveness of the wavelet analys
Externí odkaz:
http://arxiv.org/abs/2306.14972
Autor:
Komossa, S., Kraus, A., Grupe, D., Gonzalez, A. G., Gurwell, M. A., Gallo, L. C., Liu, F. K., Myserlis, I., Krichbaum, T. P., Laine, S., Bach, U., Gomez, J. L., Parker, M. L., Yao, S., Berton, M.
Based on our dedicated Swift monitoring program, MOMO, OJ 287 is one of the best-monitored blazars in the X-ray--UV--optical regime. Here, we report results from our accompanying, dense, multi-frequency (1.4--44 GHz) radio monitoring of OJ 287 betwee
Externí odkaz:
http://arxiv.org/abs/2302.11486
Autor:
Komossa, S., Grupe, D., Kraus, A., Gurwell, M. A., Haiman, Z., Liu, F. K., Tchekhovskoy, A., Gallo, L. C., Berton, M., Blandford, R., Gomez, J. L., Gonzalez, A. G.
The project MOMO (Multiwavelength Observations and Modelling of OJ 287) was set up to test predictions of binary supermassive black hole (SMBH) scenarios and to understand disk-jet physics of the blazar OJ 287. After a correction, the precessing bina
Externí odkaz:
http://arxiv.org/abs/2302.11646
Autor:
Mao, Junjie, Kriss, G. A., Landt, H., Mehdipour, M., Kaastra, J. S., Miller, J. M., Stern, D., Gallo, L. C., Gonzalez, A. G., Simon, J. J., Djorgovski, S. G., Anand, S., Kasliwal, Mansi M., Karambelkar, V.
Obscuring winds driven away from active supermassive black holes are rarely seen due to their transient nature. They have been observed with multi-wavelength observations in a few Seyfert 1 galaxies and one broad absorption line radio-quiet quasar so
Externí odkaz:
http://arxiv.org/abs/2210.05939
Autor:
Komossa, S., Kraus, A., Grupe, D., Parker, M. L., Gonzalez, A., Gallo, L. C., Gurwell, M. A., Laine, S., Yao, S., Chandra, S., Dey, L., Gomez, J. L., Hada, A. Gopakumar. K., Haggard, D., Hollett, A. R., Jermak, H., Jorstad, S., Krichbaum, T. P., Markoff, S., McCall, C., Neilsen, J., Nowak, M.
We are carrying out the densest and longest multiyear, multiwavelength monitoring project of OJ 287 ever done. The project MOMO (Multiwavelength Observations and Modelling of OJ 287) covers wavelengths from the radio to the high-energy regime. A few
Externí odkaz:
http://arxiv.org/abs/2207.11291
Understanding if and when the accretion disc extends down to the innermost stable circular orbit (ISCO) is important since it is the fundamental assumption behind measuring black hole spin. Here, we examine the 2013 and 2018 NuSTAR and Swift data (0.
Externí odkaz:
http://arxiv.org/abs/2207.02340
Autor:
Miglior, F., author, Pinotti, L., author, Boyle, L., author, Kenny, D., author, Lee, M., author, De Marchi, M., author, Cadavez, V.A.P., author, Millet, S., author, Evans, R., author, Veldkamp, T., author, Pastell, M., author, Pollott, G., author, Spoolder, H., author, Giannuzzi, D., author, Trevisi, E., author, Mota, L.F.M., author, Pegolo, S., author, Tagliapietra, F., author, Schiavon, S., author, Gallo, L., author, Ajmone Marsan, P., author, Cecchinato, A., author
Publikováno v:
Book of Abstracts of the 73rd Annual Meeting of the European Federation of Animal Science. :504-504
