activity
19952005
most citedMultiwavelength observations of short time-scale variability in NGC 4151. IV. Analysis of multiwavelength continuum variability

190 citations · 532 across the 14 of their papers we have counts for

collaborators

14 papers

astro-ph2005★ 3 cited

ISO observations of the interacting galaxy Markarian 297: with the powerful supernova remnant 1982aa

L. Metcalfe, B. O'Halloran, B. McBreen +10

Markarian (Mkn) 297 is a complex system with two interacting galaxies. Observations were made with ISO using ISOCAM, ISOPHOT and LWS. We present ISOCAM maps at 6.7, 7.7, 12 and 14.…

astro-ph2004★ 69 cited

XMM-Newton X-ray spectroscopy of the high-mass X-ray binary 4U1700-37 at low flux

A. van der Meer, L. Kaper, T. Di Salvo +4

We present results of a monitoring campaign of the high-mass X-ray binary system 4U 1700-37/HD 153919, carried out with XMM-Newton in February 2001. The system was observed at four…

astro-ph2004★ 28 cited

INTEGRAL observations of the field of the BL Lacertae object S5~0716+714

E. Pian, L. Foschini, V. Beckmann

We have performed observations of the blazar S5 0716+714 with INTEGRAL on 2-6 April 2004. In the first months of 2004, the source had increased steadily in optical brightness and h…

astro-ph2003★ 11 cited

The INTEGRAL ground segment and its science operations centre

R. Much, P. Barr, L. Hansson +10

The INTEGRAL ground segment is divided into operational and scientific components. The operational component consists of the Mission Operations Centre, the ground stations and comm…

astro-ph2003★ 35 cited

INTEGRAL observations of the black hole candidate H 1743-322 in outburst

A. N. Parmar, E. Kuulkers, T. Oosterbroek +4

INTEGRAL made 3 observations in 2003 April of the black hole candidate H 1743-322 during the rising part, and close to the maximum, of an outburst. H 1743-322 was previously observ…

astro-ph2001★ 22 cited

BeppoSAX spectroscopy of MR 2251-178: a test for ionized reflection in radio quiet QSOs

A. Orr, P. Barr, M. Guainazzi +3

We present the 0.1-200 keV BeppoSAX spectrum of MR 2251-178 observed at two epochs in 1998 separated by 5 months. Both epochs show identical spectral shape and X-ray flux. Analysis…