The Extragalactic Nature of the Serendipitous Bepposax Source 2masx J14585116−1652223 ⋆
نویسنده
چکیده
As a follow-up of the X–ray serendipitous detection of the source 2MASX J14585116−1652223, medium-resolution optical spectroscopic observations collected at the 1.5-metre “Cassini” telescope of the Astronomical Observatory of Bologna were performed. This allowed us to determine the extragalactic nature of this X–ray source, which is a Type 2 Seyfert galaxy at redshift z = 0.068 ± 0.001. This result points to the fact that 2MASX J14585116−1652223 hosts one of the very few Active Galactic Nuclei detected so far in the hard X–ray band above 20 keV, in particular at z > 0.05. Other optical and X–ray properties of this object are also discussed.
منابع مشابه
Bepposax/pds Serendipitous Detections at High Galactic Latitudes
At a flux limit of∼10 erg cm s in the 20–100 keV band, the PDS instrument on–board BeppoSAX offers the opportunity to study the extragalactic sky with an unprecedented sensitivity. In this work we report on the results of a search in the BeppoSAX archive for serendipitous high energy sources at high galactic latitudes (|b| ≥ 13◦). We have defined a set of twelve regions in which the PDS/MECS cr...
متن کاملExtragalactic 2–10 keV source counts from a fluctuation analysis of deep BeppoSAX MECS images
We present an analysis of the spatial fluctuations of the 2-10 keV Cosmic X-ray Background (CXB) as measured from 22 high galactic latitude (|b| > 25◦) fields observed with the MECS instrument on-board BeppoSAX. This technique allowed us to probe extragalactic source counts a factor 3-4 fainter than is possible with direct measurements of pointlike sources in MECS deep fields. The slope of the ...
متن کاملHI line observations of 2MASS galaxies in the Zone of Avoidance
Aims. A pilot survey has been made to obtain 21cm H i emission line profiles for 197 objects in the Zone of Avoidance (ZoA) that were classified as galaxies in the 2MASS all-sky near-infrared Extended Source Catalog (2MASX), as well as a further 16 2MASS pre-release Working Database sources that did not make it into 2MASX. Methods. 116 of the 2MASX sources and the 16 Working Database sources we...
متن کاملRecent Results on Gamma-ray Bursts with the Bepposax Satellite
Recent results on Gamma-Ray Bursts obtained with the X-ray Astronomy satellite BeppoSAX are reviewed. Main emphasis is given to the GRBs simultaneously detected with the Gamma-Ray Burst Monitor (40–700 keV) and the Wide Field Cameras (1.5–26 keV). These bursts were rapidly localized with high precision, which permitted a prompt pointing of their error boxes with the Narrow Field Instruments abo...
متن کاملInitial Results from the High Energy Experiment PDS aboard BeppoSAX
The high energy experiment PDS is one of the Narrow Field Instruments aboard the X–ray astronomy satellite BeppoSAX . It covers the energy band from 15 to 300 keV. Here we report results on its in-flight performance and observations of galactic and extragalactic X–ray sources obtained during the Science Verification Phase of the satellite: in particular Crab, Cen X–3, 4U1626–67 and PKS2155–305.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005