The Palermo Swift-BAT Hard X-ray Catalogue. II- Results after 39 months of sky survey (2009)
Cusumano, G., La Parola, V., Segreto, A., Mangano, V., Ferrigno, C., Maselli, A., ...
We present the Palermo Swift-BAT hard X-ray catalogue obtained from the analysis of the the data relative to the first 39 months of the Swift mission. We have developed a dedicated software to...
ESO VLT optical spectroscopy of BL Lacertae objects. III. An extension of the sample (2008)
Sbarufatti, B., Ciprini, S., Kotilainen, J., Decarli, R., Treves, A., Veronesi, A., ...
We present results of an ongoing program at the ESO VLT for spectroscopy of BL Lac objects lacking a firm redshift estimate and here we report on 15 objects. For 11 sources we confirm the BL Lac...
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 XMM-Newton bright serendipitous survey: identification and optical spectral properties (2008)
Caccianiga, A., Severgnini, P., Della Ceca, R., Maccacaro, T., Cocchia, F., Barcons, X., ...
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...
The XMM-Newton bright serendipitous survey. Identification and optical spectral properties (2007)
Caccianiga, A., Severgnini, P., Della Ceca, R., Maccacaro, T., Cocchia, F., Barcons, X., ...
AIMS: We present the optical classification and redshift of 348 X-ray selected sources from the XMM-Newton Bright Serendipitous Survey (XBS) which contains a total of 400 objects (identification...
GRB 070311: a direct link between the prompt emission and the afterglow (2007)
Guidorzi, C., Vergani, S. D., Sazonov, S., Covino, S., Malesani, D., Molkov, S., ...
We present prompt gamma-ray, early NIR/optical, late optical and X-ray observations of the peculiar GRB 070311 discovered by INTEGRAL, in order to gain clues on the mechanisms responsible for the...
GRB 050410 and GRB 050412: are they really dark GRBs? (2007)
Mineo, T., Mangano, V., Covino, S., Cusumano, G., La Parola, V., Troja, E., ...
We present a detailed analysis of the prompt and afterglow emission of GRB 050410 and GRB 050412 detected by Swift for which no optical counterpart was observed. The 15-150 keV energy distribution of...
REM near-IR and optical multiband observations of PKS2155-304 in 2005 (2007)
Dolcini, A., Farfanelli, F., Ciprini, S., Treves, A., Covino, S., Tosti, G., ...
Spectral variability is the main tool for constraining emission models of BL Lac objects. By means of systematic observations of the BL Lac prototype PKS 2155-304 in the infrared-optical band, we...
Troja, E., Cusumano, G., O'Brien, P., Zhang, B., Sbarufatti, B., Mangano, V., ...
We present a detailed analysis of Swift multi-wavelength observations of GRB 070110 and its remarkable afterglow. The early X-ray light curve, interpreted as the tail of the prompt emission, displays...
GRB 070411: Swift detection of a burst with optical afterglow (2007)
Moretti, A., Barthelmy, S.D., Brown, P.J., Burrows, D.N., Chester, M.M., Cummings, J.R., ...
Not Available
GRB 070110: Swift detection of a burst with a possible optical afterglow (2007)
Krimm, H.A., Barthelmy, S.D., Chester, M.M., Cusumano, G., Evans, P.A., Gehrels, N., ...
Not Available
GRB 070311: a direct link between the prompt emission and the afterglow (2007)
Guidorzi, C., Vergani, S. D., Sazonov, S., Covino, S., Malesani, D., Molkov, S., ...
Sbarufatti, B., Falomo, R., Treves, A., Kotilainen, J.
Aims: We present optical spectroscopy of a sample of BL Lac objects, to determine their redshift, to study their broad emission line properties and to characterize their close environment. Methods:...
Sbarufatti, B., Treves, A., Falomo, R., Heidt, J., Kotilainen, J., Scarpa, R.
We report on ESO Very Large Telescope optical spectroscopy of 42 BL Lacertae objects of unknown redshift. Nuclear emission lines were observed in 12 objects, while for another six we detected...
Imaging redshifts of BL Lac objects (2005)
Sbarufatti, B., Treves, A., Falomo, R.
The HST snapshot imaging survey of 110 BL Lac objects (Urry et al. 2000) has clearly shown that the host galaxies are massive and luminous ellipticals. The dispersion of the absolute magnitudes is...
ESO-VLT optical spectroscopy of BL Lac objects: I. new redshifts (2004)
Sbarufatti, B., Treves, A., Falomo, R., Heidt, J., Kotilainen, J., Scarpa, R.
We report redshift measurements for 12 BL Lacertae objects from a program aimed at obtaining high signal to noise (up to ~ 500) optical spectroscopy of a mixed sample of objects. The new...