Orbital eccentricity of the symbiotic star MWC 560 (2009)
Zamanov, R. K., Gomboc, A., Stoyanov, K. A., Stateva, I. K.
We present projected rotational velocity measurements of the red giant in the symbiotic star MWC 560 (V694 Mon), using the high-resolution spectroscopic observations with the FEROS spectrograph. We...
Rise and fall of the X-ray flash 080330: an off-axis jet? (2009)
Guidorzi, C., Clemens, C., Kobayashi, S., Granot, J., Melandri, A., D'Avanzo, P., ...
X-ray flashes (XRFs) are a class of gamma-ray bursts (GRBs) with the peak energy of the time-integrated spectrum, Ep, below 30 keV, whereas classical GRBs have Ep of a few hundreds keV. Apart from Ep...
Melandri, A., Guidorzi, C., Kobayashi, S., Bersier, D., Mundell, C. G., Milne, P., ...
We present a comprehensive multiwavelength temporal and spectral analysis of the FRED GRB 070419A. The early-time emission in the $\gamma$-ray and X-ray bands can be explained by a central engine...
Clumps of material orbiting a black hole and the QPOs (2009)
Kostic, U., Cadez, A., Gomboc, A.
Clumps of material orbiting a black hole may be disturbed, somewhat like comets in the Kuiper belt, to relatively small periastron orbits. Each periastron passage changes the orbital parameters in...
Tidal Capture by a Black Hole and Flares in Galactic Centres (2009)
Gomboc, A., Cadez, A., Calvani, M., Kostic, U.
We present the telltale signature of the tidal capture and disruption of an object by a massive black hole in a galactic centre. As a result of the interaction with the black hole's strong...
Modelling the light-curves of objects tidally disrupted by a black hole (2009)
Kostic, U., Gomboc, A., Cadez, A., Calvani, M.
Tidal disruption by massive black holes is a phenomenon, during which a large part of gravitational energy can be released on a very short time-scale. The time-scales and energies involved during...
Tidal effects on small bodies by massive black holes (2009)
Kostic, U., Cadez, A., Calvani, M., Gomboc, A.
The compact radio source Sagittarius A (Sgr A) at the centre of our Galaxy harbours a supermassive black hole, whose mass has been measured from stellar orbital motions. Sgr A is therefore the...
Rise and fall of the X-ray flash 080330: an off-axis jet? (2009)
Guidorzi, C., Clemens, C., Kobayashi, S., Granot, J., Melandri, A., D'Avanzo, P., ...
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO). DOI: 10.1051/0004-6361/200911719
Rise and fall of the X-ray flash 080330: an off-axis jet? (2009)
Guidorzi, C., Clemens, C., Kobayashi, S., Granot, J., Melandri, A., D'Avanzo, P., ...
Zamanov, R. K., Bode, M. F., Melo, C. H. F., Stateva, I. K., Bachev, R., Gomboc, A., ...
We have measured the projected rotational velocities (vsini) in a number of symbiotic stars and M giants using high resolution spectroscopic observations. On the basis of our measurements and data...
GRB 080319B: A Naked-Eye Stellar Blast from the Distant Universe (2008)
Racusin, J. L., Karpov, S. V., Sokolowski, M., Granot, J., Wu, X. F., Pal'shin, V., ...
Long duration gamma-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation from the collapse...
Gomboc, A., Kobayashi, S., Guidorzi, C., Melandri, A., Mangano, V., Sbarufatti, B., ...
We present a detailed study of the prompt and afterglow emission from Swift GRB 061126 using BAT, XRT, UVOT data and multi-color optical imaging from ten ground-based telescopes. GRB 061126 was a...
The Early-time Optical Properties of Gamma-Ray Burst Afterglows (2008)
Melandri, A., Mundell, C. G., Kobayashi, S., Guidorzi, C., Gomboc, A., Steele, I. A., ...
We present a multiwavelength analysis of 63 Gamma-Ray Bursts observed with the world's three largest robotic optical telescopes, the Liverpool and Faulkes Telescopes (North and South). Optical...
The extreme, red afterglow of GRB 060923A: Distance or dust? (2008)
Tanvir, N. R., Levan, A. J., Rol, E., Starling, R. L. C., Gorosabel, J., Priddey, R. S., ...
Gamma-ray bursts are powerful probes of the early universe, but locating and identifying very distant GRBs remains challenging. We report here the discovery of the K-band afterglow of Swift GRB...
The extreme red afterglow of GRB 060923: distance or dust? (2008)
Tanvir, N., Levan, A., Rol, E., Starling, R.L., Gorosabel, J., Priddey, R., ...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2008.13496.x
The Early-Time Optical Properties of Gamma-Ray Burst Afterglows. (2008)
Melandri, A., Mundell, C.G., Kobayashi, S., Guidorzi, C., Gomboc, A., Steele, I.A., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society DOI: 10.1086/591243 [Full text of this article is not available in the UHRA]
Gomboc, A., Kobayashi, S., Guidorzi, C., Melandri, A., Mangano, V., Sbarufatti, B., ...
We present a detailed study of the prompt and afterglow emission from Swift GRB 061126 using BAT, XRT, UVOT data and multicolor optical imaging from 10 ground-based telescopes. GRB 061126 was a long...
Broadband observations of the naked-eye gamma-ray burst GRB 080319B (2008)
Racusin, J.L., Karpov, S.V., Sokolowski, M., Granot, J., Wu, X.F., Pal'shin, V., ...
Long-duration gamma-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation from the collapse...
Do flares in Sagittarius A* reflect the last stage of tidal capture? (2007)
Cadez, A., Calvani, M., Gomboc, A., Kostic, U.
In recent years the case for the presence of 3-4 10^6 M_sun black hole in our Galactic Center has gained strength from results of stellar dynamics observations and from the detection of several rapid...
The prompt to late-time multiwavelength analysis of GRB 060210 (2007)
Curran, P. A., Van Der Horst, A. J., Beardmore, A. P., Page, K. L., Rol, E., Melandri, A., ...
We present our analysis of the multiwavelength photometric & spectroscopic observations of GRB 060210 and discuss the results in the overall context of current GRB models. All available optical data...
The prompt to late-time multiwavelength analysis of GRB 060210 (2007)
Curran, P.A., Beardmore, A.P., Page, K.L., Rol, E., Melandri, A., ...
Aims.We present our analysis of the multiwavelength photometric & spectroscopic observations of GRB 060210 and discuss the results in the overall context of current GRB models. Methods: All available...
A Review of Early-Time Optical Follow-ups with 2-m Robotic Telescopes (2006)
Gomboc, A., Guidorzi, C., Mundell, C. G., Melandri, A., Monfardini, A., Bersier, D., ...
We summarise recent deep, rapid GRB follow-up observations using the RoboNet-1.0 network which comprises three fully-robotic 2-m telescopes, the Liverpool Telescope and the Faulkes Telescopes North...
Guidorzi, C., Gomboc, A., Kobayashi, S., Mundell, C. G., Rol, E., Bode, M. F., ...
We report a multi-wavelength analysis of the prompt emission and early afterglow of GRB051111 and discuss its properties in the context of current fireball models. The detection of GRB051111 by the...
The early and late-time spectral and temporal evolution of GRB 050716 (2006)
Rol, E., Osborne, J. P., Page, K. L., McGowan, K. E., Beardmore, A. P., O'Brien, P. T ., ...
We report on a comprehensive set of observations of Gamma Ray Burst 050716, detected by the Swift satellite and subsequently followed-up rapidly in X-ray, optical and near infra-red wavebands. The...
The Remarkable Afterglow of GRB 061007: Implications for Optical Flashes and GRB Fireballs (2006)
Mundell, C. G., Melandri, A., Guidorzi, C., Kobayashi, S., Steele, I. A., Malesani, D., ...
We present a multiwavelength analysis of Swift GRB 061007. The 2-m robotic Faulkes Telescope South (FTS) began observing 137 s after the onset of the gamma-ray emission, when the optical counterpart...
Anatomy of A Dark Burst - The Afterglow of GRB 060108 (2006)
Oates, S. R., Mundell, C. G., Piranomonte, S., Page, K. L., De Pasquale, M., Monfardini, A., ...
We report the first detection of an optical afterglow of a GRB (060108) that would have been classified as 'dark' in the absence of deep, rapid ground-based optical imaging with the 2-m robotic...
Multi-wavelength afterglow observations of the high redshift GRB 050730 (2006)
Pandey, S. B., Castro-Tirado, A. J., McBreen, S., Perez-Ramirez, M. D., Bremer, M., Guerrero, M. A., ...
GRB 050730 is a long duration high-redshift burst (z=3.967) discovered by Swift. The afterglow shows variability and is well monitored over a wide wavelength range. We present comprehensive temporal...
The slope of the GRB Variability/Peak Luminosity Correlation (2006)
Guidorzi, C., Frontera, F., Montanari, E., Rossi, F., Amati, L., Gomboc, A., ...
From a sample of 32 GRBs with known redshift (Guidorzi et al. 2005) and then a sample of 551 BATSE GRBs with derived pseudo-redshift (Guidorzi 2005), the time variability/peak luminosity correlation...
Zamanov, R. K., Bode, M. F., Melo, C. H. F., Bachev, R., Gomboc, A., Stateva, I. K., ...
We have measured the projected rotational velocities (v sin i) of the mass donors for 29 S-type symbiotic stars using high resolution spectroscopic observations and the cross-correlation function...
Monfardini, A., Kobayashi, S., Guidorzi, C., Carter, D., Mundell, C. G., Bersier, D. F., ...
The 2-m robotic Liverpool Telescope (LT) reacted promptly to the high-redshift (z=4.048) gamma-ray burst GRB 060206. The afterglow was identified automatically and multicolor r'i'z' imaging was...
The variable X-ray light curve of GRB 050713A: the case of refreshed shocks (2006)
Guetta, D., Fiore, F., D'Elia, V., Perna, R., Antonelli, L. A., Piranomonte, S., ...
We present a detailed study of the spectral and temporal properties of the X-ray and optical emission of GRB050713a up to 0.5 day after the main GRB event. The X-ray light curve exhibits large...
To complement hydrodynamic studies of the tidal disruption of the star by a massive black hole, we present the study of stellar luminosity and its variations produced by the strong gravitational...
Rotational velocities of the giants in symbiotic stars - I. D '-type symbiotics (2006)
Zamanov, R. K., Bode, M. F., Melo, C. H. F., Porter, J., Gomboc, A., Konstantinova Antova, R.
We have measured the rotational velocities (v sin i) of the mass donors in a number of D'-type symbiotic stars (SSs), using the cross-correlation function method. Four out of five D' SSs with known v...
Multi-wavelength afterglow observations of the high redshift GRB 050730 (2006)
Pandey, S. B., Castro-Tirado, A. J., McBreen, S., Pérez-Ramírez, M. D., Bremer, M., Guerrero, M. A., ...
The Automatic Real-Time GRB Pipeline of the 2-m Liverpool Telescope (2005)
Guidorzi, C., Monfardini, A., Gomboc, A., Mottram, C. J., Mundell, C. G., Steele, I. A., ...
The 2-m Liverpool Telescope (LT), owned by Liverpool John Moores University, is located in La Palma (Canary Islands) and operates in fully robotic mode. In 2005, the LT began conducting an automatic...
Guidorzi, C., Monfardini, A., Gomboc, A., Mundell, C. G., Steele, I. A., Carter, D., ...
The 2-m robotic Liverpool Telescope reacted promptly to the gamma-ray burst GRB 050502a discovered by INTEGRAL and started observing 3 min after the onset of the GRB. The automatic identification of...
Rotational velocities of the giants in symbiotic stars: I. D'-type symbiotics (2005)
Zamanov, R. K., Bode, M. F., Melo, C. H. F., Porter, J., Gomboc, A., Konstantinova-Antova, R.
We have measured the rotational velocities (v.sini) of the mass donors in a number of D'--type symbiotic stars, using the cross-correlation function method. Four from five D' symbiotic stars with...
The GRB Variability/Peak Luminosity Correlation: new results (2005)
Guidorzi, C., Frontera, F., Montanari, E., Rossi, F., Amati, L., Gomboc, A., ...
We report test results of the correlation between time variability and peak luminosity of Gamma-Ray Bursts (GRBs), using a larger sample (32) of GRBs with known redshift than that available to...
Wilkinson, M. I., Vallenari, A., Turon, C., Munari, U., Katz, D., Bono, G., ...
The Gaia mission is designed as a Galaxy explorer, and will measure simultaneously, in a survey mode, the five or six phase space parameters of all stars brighter than 20th magnitude, as well as...
Gomboc, A., Mundell, C. G., Guidorzi, C., Monfardini, A., Mottram, C. J., Priddey, R., ...
We present the first optical observations of a Gamma Ray Burst (GRB) afterglow using the 2-m robotic Liverpool Telescope (LT), which is owned and operated by Liverpool John Moores University and...
The Liverpool Telescope Automatic Pipeline for Real-time GRB Afterglow Detection (2005)
Gomboc, A., Monfardini, A., Guidorzi, C., Mundell, C. G., Mottram, C. J., Fraser, S. N., ...
The 2-m robotic Liverpool Telescope (LT) is ideally suited to the rapid follow-up of unpredictable and transient events such as GRBs. Our GRB follow-up strategy is designed to identify optical/IR...
Rapid H-alpha variability in T Coronae Borealis (2004)
Zamanov, R., Gomboc, A., Bode, M. F., Porter, J. M., Tomov, N. A.
We report our search for variability in the H-alpha emission line of the recurrent novae T CrB with time resolution 10-15 minutes. This is comparable with the time scale of the photometric flickering...
White dwarfs with jets as non-relativistic analogues of quasars and microquasars? (2004)
Zamanov, R., Bode, M. F., Marziani, P., Davis, R. J., Eyres, S. P. S., Gomboc, A., ...
We explore the similarities between accreting white dwarfs (CH Cyg and MWC 560) and the much more energetic jet sources - quasars and microquasars. To-date we have identified several common...
Rapid GRB Follow-up with the 2-m Robotic Liverpool Telescope (2004)
Gomboc, A., Bode, M. F., Carter, D., Guidorzi, C., Monfardini, A., Mundell, C. G., ...
We present the capabilities of the 2-m robotic Liverpool Telescope (LT), owned and operated by Liverpool John Moores University and situated at ORM, La Palma. Robotic control and scheduling of the LT...
Determination of stellar rotation with Gaia and effects of spectral mismatch (2004)
Stellar spectra obtained with Radial Velocity Spectrometer on-board Gaia will enable determination of projected rotational velocities (v sin i) from rotational broadening of spectral lines. To...
Katz, D., Munari, U., Cropper, M., Zwitter, T., Thevenin, F., David, M., ...
The definition and optimisation studies for the Gaia satellite spectrograph, the Radial Velocity Spectrometer (RVS), converged in late 2002 with the adoption of the instrument baseline. This paper...
Gomboc, A., Bode, M. F., Carter, D., Mundell, C. G., Newsam, A. M., Smith, R. J., ...
The Liverpool Telescope, situated at Roque de los Muchachos Observatory, La Palma, Canaries, is the first 2-m, fully instrumented robotic telescope. It recently began observations. Among Liverpool...
GRB optical and IR rapid follow-up with the 2 m Liverpool Robotic Telescope (2003)
Gomboc, A., Bode, M. F., Carter, D., Mundell, C. G., Newsam, A. M., Smith, R. J., ...
The Liverpool Telescope, owned and operated by Liverpool John Moores University and situated at Roque de los Muchachos, La Palma, is the first 2-m, fully instrumented robotic telescope. We plan to...