Zobrazeno 1 - 10
of 1 015
pro vyhledávání: '"Perna R"'
Autor:
Ibrahim, A. Y., Borghese, A., Rea, N., Zelati, F. Coti, Parent, E., Russell, T. D., Ascenzi, S., Sathyaprakash, R., Gotz, D., Mereghetti, S., Topinka, M., Rigoselli, M., Savchenko, V., Campana, S., Israel, G. L., Tiengo, A., Perna, R., Turolla, R., Zane, S., Esposito, P., Castillo, G. A. Rodrıguez, Graber, V., Possenti, A., Dehman, C., Ronchi, M., Loru, S.
Swift J1818.0-1607 is a radio-loud magnetar with a spin period of 1.36 s and a dipolar magnetic field strength of B~3E14 G, which is very young compared to the Galactic pulsar population. We report here on the long-term X-ray monitoring campaign of t
Externí odkaz:
http://arxiv.org/abs/2211.12391
The surface temperature distributions of central compact objects (CCOs) are powerful probes of their crustal magnetic field strengths and geometries. Here we model the surface temperature distribution of RX J0822$-$4300, the CCO in the Puppis A super
Externí odkaz:
http://arxiv.org/abs/2112.12311
Autor:
Yang, Y., Bartos, I., Fragione, G., Haiman, Z., Kowalski, M., Marka, S., Perna, R., Tagawa, H.
Active galactic nuclei (AGNs) can act as black hole assembly lines, funneling some of the stellar-mass black holes from the vicinity of the galactic center into the inner plane of the AGN disk where the black holes can merge through dynamical frictio
Externí odkaz:
http://arxiv.org/abs/2105.02342
Autor:
Borghese, A., Rea, N., Turolla, R., Rigoselli, M., Alford, J. A. J., Gotthelf, E. V., Burgay, M., Possenti, A., Zane, S., Zelati, F. Coti, Perna, R., Esposito, P., Mereghetti, S., Viganó, D., Tiengo, A., Götz, D., Ibrahim, A., Israel, G. L., Pons, J., Sathyaprakash, R.
After 15 years, in late 2018, the magnetar XTE J1810-197 underwent a second recorded X-ray outburst event and reactivated as a radio pulsar. We initiated an X-ray monitoring campaign to follow the timing and spectral evolution of the magnetar as its
Externí odkaz:
http://arxiv.org/abs/2104.11083
In this paper, we consider triple systems composed of main-sequence (MS) stars, and their internal evolution due to stellar and binary evolution. Our focus is on triples that produce white dwarfs (WDs), where Roche lobe overflow of an evolving tertia
Externí odkaz:
http://arxiv.org/abs/2005.07536
Autor:
Esposito, P., Rea, N., Borghese, A., Zelati, F. Coti, Viganò, D., Israel, G. L., Tiengo, A., Ridolfi, A., Possenti, A., Burgay, M., Götz, D., Pintore, F., Stella, L., Dehman, C., Ronchi, M., Campana, S., Garcia-Garcia, A., Graber, V., Mereghetti, S., Perna, R., Castillo, G. A. Rodríguez, Turolla, R., Zane, S.
Publikováno v:
The Astrophysical Journal Letters, Volume 896, L30 (2020)
The magnetar Swift ,J1818.0-1607 was discovered in March 2020 when Swift detected a 9 ms hard X-ray burst and a long-lived outburst. Prompt X-ray observations revealed a spin period of 1.36 s, soon confirmed by the discovery of radio pulsations. We r
Externí odkaz:
http://arxiv.org/abs/2004.04083
Autor:
Rea, N., Zelati, F. Coti, Vigano', D., Papitto, A., Baganoff, F., Borghese, A., Campana, S., Esposito, P., Haggard, D., Israel, G. L., Mereghetti, S., Mignani, R., Perna, R., Pons, J. A., Ponti, G., Stella, L., Torres, D. F., Turolla, R., Zane, S.
The magnetar SGR J1745-2900 discovered at parsecs distance from the Milky Way central black hole, Sagittarius A*, represents the closest pulsar to a supermassive black hole ever detected. Furthermore, its intriguing radio emission has been used to st
Externí odkaz:
http://arxiv.org/abs/2003.07235
Autor:
Foley, R. J., Alexander, K. D., Andreoni, I., Arcavi, I., Auchettl, K., Barnes, J., Baym, G., Bellm, E. C., Beloborodov, A. M., Blagorodnova, N., Blakeslee, J. P., Brady, P. R., Branchesi, M., Brown, J. S., Butler, N., Cantiello, M., Chornock, R., Cook, D. O., Cooke, J., Coppejans, D. L., Corsi, A., Couch, S. M., Coughlin, M. W., Coulter, D. A., Cowperthwaite, P. S., Dietrich, T., Dimitriadis, G., Drout, M. R., Elias, J. H., Farr, B., Fernandez, R., Filippenko, A. V., Fong, W., Fragos, T., Frail, D. A., Freedman, W. L., Fryer, C. L., Golkhou, V. Z., Hiramatsu, D., Hjorth, J., Horesh, A., Hosseinzadeh, G., Hotokezaka, K., Howell, D. A., Hung, T., Jones, D. O., Kalogera, V., Kasen, D., Kerzendorf, W. E., Kilpatrick, C. D., Kirshner, R. P., Krisciunas, K., Lattimer, J. M., Lazzati, D., Levan, A. J., MacFadyen, A. I., Maeda, K., Mandel, I., Mandel, K. S., Margalit, B., Margutti, R., McIver, J., Metzger, B. D., Mooley, K., Moriya, T., Murguia-Berthier, A., Narayan, G., Nicholl, M., Nissanke, S., Nomoto, K., O'Meara, J. M., O'Shaughnessy, R., O'Connor, E., Palmese, A., Pan, Y. -C., Pankow, C., Paterson, K., Perley, D. A., Perna, R., Piro, A. L., Pritchard, T. A., Quataert, E., Radice, D., Ramirez-Ruiz, E., Reddy, S., Rest, A., Riess, A. G., Rodriguez, C. L., Rojas-Bravo, C., Rossi, E. M., Rosswog, S., Ruiz, M., Shapiro, S. L., Shoemaker, D. H., Siebert, M. R., Siegel, D. M., Siellez, K., Smith, N., Soares-Santos, M., Suntzeff, N. B., Surman, R., Tanaka, M., Tanvir, N. R., Terreran, G., Valenti, S., Villar, V. A., Wang, L., Webb, S. A., Wheeler, J. C., Williams, P. K. G., Woosley, S., Zaldarriaga, M., Zevin, M.
As of today, we have directly detected exactly one source in both gravitational waves (GWs) and electromagnetic (EM) radiation, the binary neutron star merger GW170817, its associated gamma-ray burst GRB170817A, and the subsequent kilonova SSS17a/AT
Externí odkaz:
http://arxiv.org/abs/1903.04553
Autor:
Borghese, A., Rea, N., Turolla, R., Pons, J. A., Esposito, P., Zelati, F. Coti, Savchenko, V., Bozzo, E., Perna, R., Zane, S., Mereghetti, S., Campana, S., Mignani, R. P., Bachetti, M., Rodriguez, G., Pintore, F., Tiengo, A., Gotz, D., Israel, G. L., Stella, L.
After two major outbursts in 2006 and 2011, on 2017 May 16 the magnetar CXOU J164710.2-455216, hosted within the massive star cluster Westerlund I, emitted a short (20 ms) burst, which marked the onset of a new active phase. We started a long-term mo
Externí odkaz:
http://arxiv.org/abs/1901.02026
Autor:
Borghese, A., Zelati, F. Coti, Esposito, P., Rea, N., De Luca, A., Bachetti, M., Israel, G. L., Perna, R., Pons, J. A.
We report on a new NuSTAR observation and on the ongoing Swift XRT monitoring campaign of the peculiar source 1E 161348-5055, located at the centre of the supernova remnant RCW 103, which is recovering from its last outburst in June 2016. The X-ray s
Externí odkaz:
http://arxiv.org/abs/1805.00496