Browsing by Author "Fruscione, Antonella"

Now showing items 1-3 of 3

    • Chandra Study of an Overdensity of X-Ray Sources around Two Distant (z ~ 0.5) Clusters 

      Cappi, M.; Mazzotta, P.; Elvis, Martin S.; Burke, D. J.; Comastri, A.; Fiore, F.; Forman, William R.; Fruscione, Antonella; Green, P.; Harris, D.; Hooper, E. J.; Jones, C.; Kaastra, J. S.; Kellogg, E.; Murray, S.; McNamara, Brian David; Nicastro, F.; Ponman, T. J.; Schlegel, E. M.; Siemiginowska, Aneta L.; Tananbaum, Harvey D.; Vikhlinin, Alexey A.; Virani, S.; Wilkes, Belinda Jane (IOP Publishing, 2001)
      We present results from a Chandra X-Ray Observatory study of the field X-ray source populations in four different observations: two high-redshift (z ~ 0.5) clusters of galaxies 3C 295 and RX J003033.2+261819; and two ...

    • The Complex X‐Ray Absorbers of NGC 3516 Observed by BEPPOSAX 

      Costantini, E.; Nicastro, F.; Fruscione, Antonella; Mathur, S.; Comastri, A.; Elvis, Martin S.; Fiore, F.; Salvini, C.; Stirpe, G. M.; Vignali, C.; Wilkes, Belinda Jane; O’Brien, P. T.; Goad, M. R. (IOP Publishing, 2000)
      In this paper we present the analysis of two broadband (0.1-150 keV) BeppoSAX observations of the Seyfert 1 galaxy NGC 3516. The two observations were taken 4 months apart, on 1996 November 8 and 1997 March 12. We report ...

    • X-ray Luminosity and Absorption Column Fluctuations in the H2O Maser Galaxy NGC 4258 from Weeks to Years 

      Fruscione, Antonella; Greenhill, Lincoln Jared; Filippenko, Alexei V.; Moran, James M.; Herrnstein, James R.; Galle, Elizabeth (IOP Publishing, 2005)
      We report monitoring of the 0.3–10 keV spectrum of NGC 4258 with the the XMM-Newton Observatory at five epochs over 1.5 years. We also report reprocessing of an overlapping four-epoch series of archival Chandra observations ...