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REM near-IR and optical multiband observations of PKS2155-304 in 2005
A. Dolcini, F. Farfanelli, S. Ciprini +23
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-o…
The He II Fowler lines and the O III and N III Bowen fluorescence lines in the symbiotic nova RR Tel
P. Selvelli, J. Danziger, P. Bonifacio
A new measure of reddening (E0.00) has been obtained from the comparison between the observed and the theoretical intensity decrement for 20 emission lines of the $…
SN 1987A After 18 Years: Mid-Infrared GEMINI and SPITZER Observations of the Remnant
Patrice Bouchet, Eli Dwek, I. John Danziger +6
We present high resolution 11.7 and 18.3um mid-IR images of SN 1987A obtained on day 6526 with T-ReCS attached to the Gemini telescope. The 11.7um flux has increased significantly…
Multiband Photometry of the Blazar PKS 0537-441: A Major Active State in December 2004 - March 2005
A. Dolcini, S. Covino, A. Treves +18
Multiband VRIJHK photometry of the Blazar PKS 0537-441 obtained with the REM telescope from December 2004 to March 2005 is presented. A major period of activity is found with more…
Late-epoch optical and near-infrared observations of the GRB000911 afterglow and its host galaxy
N. Masetti, E. Palazzi, E. Pian +28
We present the results of an optical and near-infrared (NIR) monitoring campaign of the counterpart of Gamma-Ray Burst (GRB) 000911, located at redshift z=1.06, from 5 days to more…
XMM-Newton Observations of the Field of Gamma-Ray Burst 980425
E. Pian, P. Giommi, L. Amati +12
The error box of GRB980425 has been observed by XMM-Newton in March 2002, with the aim of measuring the late epoch X-ray emission of the supernova 1998bw and of clarifying its supp…