Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Becerra, Rosa L"'
Autor:
López, K. Océlotl. C., Watson, Alan M., Lee, William H., Becerra, Rosa L., Pereyra, Margarita
The Fermi/GBM instrument is a vital source of detections of gamma-ray bursts and has an increasingly important role to play in understanding gravitational-wave transients. In both cases, its impact is increased by accurate positions with reliable unc
Externí odkaz:
http://arxiv.org/abs/2404.19732
ClassiPyGRB: Machine Learning-Based Classification and Visualization of Gamma Ray Bursts using t-SNE
Gamma-ray burst (GRBs) are the brightest events in the universe. For decades, astrophysicists have known about their cosmological nature. Every year, space missions such as Fermi and SWIFT detect hundreds of them. In spite of this large sample, GRBs
Externí odkaz:
http://arxiv.org/abs/2404.06439
Autor:
Fraija, Nissim, Kamenetskaia, Boris Betancourt, Galván-Gámez, Antonio, Veres, Peter, Becerra, Rosa L., Dichiara, Simone, Dainotti, Maria G., Lizcano, Francisco, Aguilar-Ruiz, Edilberto
The second {\itshape Fermi}/LAT gamma-ray burst (GRB) catalog (2FLGC) spanning the first decade of operations by the LAT collaboration was recently released. The closure relations of the synchrotron forward shock (FS) model are not able to reproduce
Externí odkaz:
http://arxiv.org/abs/2311.01710
Autor:
Angulo-Valdez, Camila, Becerra, Rosa L., Pereyra, Margarita, Garcia-Cifuentes, Keneth, Vargas, Felipe, Watson, Alan M., De Colle, Fabio, Fraija, Nissim, Butler, Nathaniel R., Dainotti, Maria G., Dichiara, Simone, Lee, William H., Troja, Eleonora, Bloom, Joshua S., González, J. Jesús, Kutyrev, Alexander S., Prochaska, J. Xavier, Ramirez-Ruiz, Enrico, Richer, Michael G.
We present analytical and numerical models of the bright long GRB 210822A at $z=1.736$. The intrinsic extreme brightness exhibited in the optical, which is very similar to other bright GRBs (e.g., GRBs 080319B, 130427A, 160625A 190114C, and 221009A),
Externí odkaz:
http://arxiv.org/abs/2309.10106
Autor:
Fraija, Nissim, Galvan-Gamez, Antonio, Kamenetskaia, Boris Betancourt, Dainotti, Maria G., Dichiara, Simone, Veres, P., Becerra, Rosa L., Pedreira, A. C. Caligula do E. S.
Gamma-ray bursts (GRBs) are fascinating extragalactic objects. They represent a fantastic opportunity to investigate unique properties not exhibited in other sources. Multi-wavelength afterglow observations from some short- and long-duration GRBs rev
Externí odkaz:
http://arxiv.org/abs/2205.02459
Autor:
Becerra, Rosa L., De Colle, Fabio, Cantó, Jorge, Lizano, Susana, González, Ricardo F., Granot, Jonathan, Klotz, Alain, Watson, Alan M., Fraija, Nissim, Araudo, Anabella T., Troja, Eleonora, Atteia, Jean Luc, Lee, William H., Turpin, Damien, Bloom, Joshua S., Boer, Michael, Butler, Nathaniel R., González, José J., Kutyrev, Alexander S., Prochaska, J. Xavier, Ramírez-Ruíz, Enrico, Richer, Michael G., Zúñiga, Carlos G. Román
The transition from prompt to the afterglow emission is one of the most exciting and least understood phases in gamma-ray bursts (GRBs). Correlations among optical, X-ray and gamma-ray emission in GRBs have been explored, to attempt to answer whether
Externí odkaz:
http://arxiv.org/abs/2009.13614
Autor:
Watson, Alan M., Butler, Nathaniel R., Lee, William H., Becerra, Rosa L., Pereyra, Margarita, Angeles, Fernando, Farah, Alejandro, Figueroa, Liliana, González-Buitrago, Diego, Quirós, Fernando, Ruíz-Díaz-Soto, Jaime, de Vargas, Carlos Tejada, Tinoco, Silvio J., Wolfram, Tanner
We derive limits on any electromagnetic counterpart to the compact binary merger S190814bv, whose parameters are consistent with the merger of a black hole and a neutron star. We present observations with the new wide-field optical imager DDOTI and a
Externí odkaz:
http://arxiv.org/abs/2001.05436
Autor:
Becerra, Rosa L., De Colle, Fabio, Watson, Alan M., Fraija, Nissim, Butler, Nathaniel R., Lee, William H., Román-Zuñiga, Carlos G., Bloom, Joshua S., Gonzalez, Jesús J., Kutyrev, Alexander, Prochaska, J. Xavier, Ramirez-Ruiz, Enrico, Richer, Michael G., Troja, Eleonora
Publikováno v:
ApJ, 2019, under review
The early optical emission of gamma-ray bursts gives an opportunity to understand the central engine and first stages of these events. About 30\% of GRBs present flares whose origin is still a subject of discussion. We present optical photometry of G
Externí odkaz:
http://arxiv.org/abs/1910.09743
Autor:
Becerra, Rosa L., Dichiara, Simone, Watson, Alan M., Troja, Eleonora, Fraija, Nissim I., Klotz, Alain, Butler, Nathaniel R., Lee, William H., Veres, Péter, Bloom, Joshua S., Boer, Michel L., González, J. Jesús, Kutyrev, Alexander, Prochaska, Jason X., Ramirez-Ruiz, Enrico, Richer, Michael G., Turpin, Damien
We present observations of the possible short GRB 180418A in $\gamma$-rays, X-rays, and in the optical. Early optical photometry with the TAROT and RATIR instruments show a bright peak ($\approx$ 14.2 AB mag) between $T+28$ and $T+90$ seconds that we
Externí odkaz:
http://arxiv.org/abs/1904.05987
Autor:
Perley, Daniel A., Mazzali, Paolo A., Yan, Lin, Cenko, S. Bradley, Gezari, Suvi, Taggart, Kirsty, Blagorodnova, Nadia, Fremling, Christoffer, Mockler, Brenna, Singh, Avinash, Tominaga, Nozomu, Tanaka, Masaomi, Watson, Alan M., Ahumada, Tomás, Anupama, G. C., Ashall, Chris, Becerra, Rosa L., Bersier, David, Bhalerao, Varun, Bloom, Joshua S., Butler, Nathaniel R., Copperwheat, Chris, Coughlin, Michael W., De, Kishalay, Drake, Andrew J., Duev, Dmitry A., Frederick, Sara, González, J. Jesús, Goobar, Ariel, Heida, Marianne, Ho, Anna Y. Q., Horst, John, Hung, Tiara, Itoh, Ryosuke, Jencson, Jacob E., Kasliwal, Mansi M., Kawai, Nobuyuki, Kulkarni, Shrinivas R., Kumar, Brajesh, Kumar, Harsh, Kutyrev, Alexander S., Khanam, Tanazza, Lee, William H., Maeda, Keiichi, Mahabal, Ashish, Murata, Katsuhiro L., Neill, James D., Ngeow, Chow-Choong, Penprase, Bryan, Pian, Elena, Quimby, Robert, Ramirez-Ruiz, Enrico, Richer, Michael, Román-Zúñiga, Carlos G., Srivastava, Shubham, Socia, Quentin, Sollerman, Jesper, Tachibana, Yutaro, Taddia, Francesco, Tinyanont, Samaporn, Troja, Eleonora, Ward, Charlotte, Wee, Jerrick
Wide-field optical surveys have begun to uncover large samples of fast (t_rise < 5d), luminous (M_peak < -18), blue transients. While commonly attributed to the breakout of a supernova shock into a dense wind, the great distances to the transients of
Externí odkaz:
http://arxiv.org/abs/1808.00969