Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Vincentelli, Federico"'
Autor:
Giustini, Margherita, Miniutti, Giovanni, Arcodia, Riccardo, Goodwin, Adelle, Alexander, Kate D., Chakraborty, Joheen, Buchner, Johannes, Kosec, Peter, Saxton, Richard, Bonetti, Matteo, Franchini, Alessia, Ryu, Taeho, Shu, Xinwen, Kara, Erin, Ponti, Gabriele, Quintin, Erwan, Vincentelli, Federico, Webb, Natalie, Kajava, Jari, von Fellenberg, Sebastiano D.
Quasi-periodic eruptions (QPEs) are an extreme X-ray variability phenomenon associated with low-mass supermassive black holes. First discovered in the nucleus of the galaxy GSN 069, they have been so far securely detected in five other galaxies, incl
Externí odkaz:
http://arxiv.org/abs/2409.01938
Autor:
Ulgiati, Alberto, Vincentelli, Federico Maria, Casella, Piergiorgio, Veledina, Alexandra, Maccarone, Thomas, Russell, David, Uttley, Phil, Ambrosino, Filippo, Baglio, Maria Cristina, Imbrogno, Matteo, Melandri, Andrea, Motta, Sara Elisa, O'Brien, Kiran, Sanna, Andrea, Shahbaz, Tariq, Altamirano, Diego, Fender, Rob, Maitra, Dipankar, Malzac, Julien
Publikováno v:
A&A 690, A239 (2024)
We report on two epochs of simultaneous near-infrared (IR) and X-ray observations with a sub-second time resolution of the low mass X-ray binary black hole candidate Swift J1753.5--0127 during its long 2005--2016 outburst. Data were collected strictl
Externí odkaz:
http://arxiv.org/abs/2407.00195
Autor:
Castro, Angel, Michel, Raúl, Castro Segura, Noel, Altamirano, Diego, Tejada, Carlos, Herrera, Joel, Colorado, Enrique, Sierra, Gerardo, Altamirano-Dévora, Liliana, Echevarría, Juan, Sloot, Rasjied, Wijnands, Rudy, Zavala, Iván, Rojas, David, Hernández Santisteban, Juan V., Vincentelli, Federico, Hernández-Landa, Javier A., Wang, Song, Fuentes, Melissa, Gandhi, Poshak, Silva-Cabrera, José S., Ramírez Vélez, Julio, García, Benjamín, Guisa, Gerardo, Gómez Maqueo Chew, Yilen, Montalvo, Felipe, Valenzuela, Francisco
Publikováno v:
In New Astronomy November 2024 112
Autor:
Panessa, Francesca, Perez-Torres, Miguel, Hernandez-Garcia, Lorena, Casella, Piergiorgio, Giroletti, Marcello, Orienti, Monica, Baldi, Ranieri D., Bassani, Loredana, Fiocchi, Maria Teresa, La Franca, Fabio, Malizia, Angela, McHardy, Ian, Nicastro, Fabrizio, Piro, Luigi, Vincentelli, Federico, Williams, David R. A., Ubertini, Pietro
The origin of radio emission in the majority of Active Galactic Nuclei (AGN) is still poorly understood. Various competing mechanisms are likely involved in the production of radio emission and precise diagnostic tools are needed to disentangle them,
Externí odkaz:
http://arxiv.org/abs/2111.12595
Autor:
Bogensberger, David, Ponti, Gabriele, Jin, Chichuan, Belloni, Tomaso M., Pan, Haiwu, Nandra, Kirpal, Russell, Thomas D., Miller-Jones, James C. A., Muñoz-Darias, Teo, Vynatheya, Pavan, Vincentelli, Federico
Publikováno v:
A&A 641, A101 (2020)
Aims: Flip-flops are top-hat-like X-ray flux variations which occur in some transient accreting black hole binary systems and feature simultaneous changes in the spectral hardness and the Power Density Spectrum (PDS). They occur at a crucial time in
Externí odkaz:
http://arxiv.org/abs/2006.10934
Autor:
Pahari, Mayukh, McHardy, Ian M., Vincentelli, Federico, Cackett, Edward M., Peterson, Bradley M., Goad, Michael R., Gültekin, Kayhan, Horne, Keith
Using a month-long X-ray lightcurve from ${\it RXTE}$/PCA and 1.5 month long UV continuum lightcurves from ${\it IUE}$ spectra in 1220$-$1970 $\r{A}$, we performed a detailed time-lag study of the Seyfert 1 galaxy NGC 7469. Our cross-correlation anal
Externí odkaz:
http://arxiv.org/abs/2004.07901
In the last 10 years multi-wavelength fast variability studies of low mass X-ray binaries have shown a dramatic development. A key discovery was the detection of O-IR sub-second fluctuations in two black-hole transients, lagging the X-rays by $\appro
Externí odkaz:
http://arxiv.org/abs/1903.02005
Autor:
Malzac, Julien, Kalamkar, Maithili, Vincentelli, Federico, Vue, Alexis, Drappeau, Samia, Belmont, Renaud, Casella, Piergiorgio, Clavel, Maïca, Dornic, Stéphane Corbel Mickaël Coriat Damien, Ferreira, Jonathan, Henri, Gilles, Maccarone, Thomas J., Marcowith, Alexandre, O'Brien, Kieran, Péault, Mathias, Petrucci, Pierre-Olivier, Rodriguez, Jérome, Russell, David M., Uttley, Phil
Using the simultaneous Infra-Red (IR) and X-ray light curves obtained by Kalamkar et al. (2016), we perform a Fourier analysis of the IR/X-ray timing correlations of the black hole X-ray binary (BHB) GX 339-4. The resulting IR vs X-ray Fourier cohere
Externí odkaz:
http://arxiv.org/abs/1807.09835
Autor:
Gandhi, Poshak, Bachetti, Matteo, Dhillon, Vik S., Fender, Robert P., Hardy, Liam K., Harrison, Fiona A., Littlefair, Stuart P., Malzac, Julien, Markoff, Sera, Marsh, Tom R., Mooley, Kunal, Stern, Daniel, Tomsick, John A., Walton, Dominic J., Casella, Piergiorgio, Vincentelli, Federico, Altamirano, Diego, Casares, Jorge, Ceccobello, Chiara, Charles, Phil A., Ferrigno, Carlo, Hynes, Robert I., Knigge, Christian, Kuulkers, Erik, Pahari, Mayukh, Rahoui, Farid, Russell, David M., Shaw, Aarran W.
Relativistic plasma jets are observed in many accreting black holes. According to theory, coiled magnetic fields close to the black hole accelerate and collimate the plasma, leading to a jet being launched. Isolating emission from this acceleration a
Externí odkaz:
http://arxiv.org/abs/1710.09838
Autor:
Sigismondi, Costantino, Ucci, Graziano, Zema, Vanessa, Scardino, Francesco, Vincentelli, Federico Maria
The variabile star Delta Scorpii is in conjunction with the Sun at the end of November each year. We studied its magnitude by averaging the observations of 28 Nov - 1 Dec from 1996 to 2013 using the coronograph LASCO C3 on-board the SOHO Satellite an
Externí odkaz:
http://arxiv.org/abs/1410.8492