Multiwavelength observations of the extraordinary accretion event AT2021lwx

Autor: Wiseman, P., Wang, Y., Hönig, S., Castro-Segura, N., Clark, P., Frohmaier, C., Fulton, M. D., Leloudas, G., Middleton, M., Müller-Bravo, T. E., Mummery, A., Pursiainen, M., Smartt, S. J., Smith, K., Sullivan, M., Anderson, J. P., Pulido, J. A. Acosta, Charalampopoulos, P., Banerji, M., Dennefeld, M., Galbany, L., Gromadzki, M., Gutiérrez, C. P., Ihanec, N., Kankare, E., Lawrence, A., Mockler, B., Moore, T., Nicholl, M., Onori, F., Petrushevska, T., Ragosta, F., Rest, S., Smith, M., Wevers, T., Carini, R., Chen, T. -W., Chambers, K., Gao, H., Huber, M., Inserra, C., Magnier, E., Makrygianni, L., Toy, M., Vincentelli, F., Young, D. R.

We present observations from X-ray to mid-infrared wavelengths of the most energetic non-quasar transient ever observed, AT2021lwx. Our data show a single optical brightening by a factor $>100$ to a luminosity of $7\times10^{45}$ erg s$^{-1}$, and a

Externí odkaz: http://arxiv.org/abs/2303.04412

Failed-Transition outbursts in Black hole low-mass X-ray binaries

Autor: Alabarta, K., Altamirano, D., Méndez, M., Cúneo, V. A., Vincentelli, F. M., Castro-Segura, N., García, F., Luff, B., Veledina, A.

Black hole low-mass X-ray binaries (BH LMXBs) evolve in a similar way during outburst. Based on the X-ray spectrum and variability, this evolution can be divided into three canonical states: low/hard, intermediate and high/soft state. BH LMXBs evolve

Externí odkaz: http://arxiv.org/abs/2107.10035

Investigating the multiwavelength behaviour of the flat spectrum radio quasar CTA 102 during 2013-2017

Autor: D'Ammando, F., Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., Agudo, I., Arkharov, A. A., Bachev, R., Baida, G. V., Benitez, E., Borman, G. A., Boschin, W., Bozhilov, V., Butuzova, M. S., Calcidese, P., Carnerero, M. I., Carosati, D., Casadio, C., Castro-Segura, N., Chen, W. -P., Damljanovic, G., Di Paola, A., Echevarria, J., Efimova, N. V., Ehgamberdiev, Sh. A., Espinosa, C., Fuentes, A., Giunta, A., Gomez, J. L., Grishina, T. S., Gurwell, M. A., Hiriart, D., Jermak, H., Jordan, B., Jorstad, S. G., Joshi, M., Kimeridze, G. N., Kopatskaya, E. N., Kuratov, K., Kurtanidze, O. M., Kurtanidze, S. O., Lahteenmaki, A., Larionov, V. M., Larionova, E. G., Larionova, L. V., Lazaro, C., Lin, C. S., Malmrose, M. P., Marscher, A. P., Matsumoto, K., McBreen, B., Michel, R., Mihov, B., Minev, M., Mirzaqulov, D. O., Molina, S. N., Moody, J. W., Morozova, D. A., Nazarov, S. V., Nikiforova, A. A., Nikolashvili, M. G., Ohlert, J. M., Okhmat, N., Ovcharov, E., Pinna, F., Polakis, T. A., Protasio, C., Pursimo, T., Redondo-Lorenzo, F. J., Rizzi, N., Rodriguez-Coira, G., Sadakane, K., Sadun, A. C., Samal, M. R., Savchenko, S. S., Semkov, E., Sigua, L., Skiff, B. A., Slavcheva-Mihova, L., Smith, P. S., Steele, I. A., Strigachev, A., Tammi, J., Thum, C., Tornikoski, M., Troitskaya, Yu. V., Troitsky, I. S., Vasilyev, A. A., Vince, O., Hovatta, T., Kiehlmann, S., Max-Moerbeck, W., Readhead, A. C. S., Reeves, R., Pearson, T. J., Mufakharov, T., Sotnikova, Yu. V., Mingaliev, M. G.

We present a multiwavelength study of the flat-spectrum radio quasar CTA 102 during 2013-2017. We use radio-to-optical data obtained by the Whole Earth Blazar Telescope, 15 GHz data from the Owens Valley Radio Observatory, 91 and 103 GHz data from th

Externí odkaz: http://arxiv.org/abs/1910.03609

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Absence of nebular He ii λ4686 constrains the UV emission from the ultraluminous X-ray pulsar NGC 1313 X-2.

Autor: Gúrpide, A, Castro Segura, N, Soria, R, Middleton, M

Publikováno v: Monthly Notices of the Royal Astronomical Society; Jul2024, Vol. 531 Issue 3, p3118-3135, 18p