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32 papers · 2 filters
Discovery of a Be/X-ray Binary Consistent with the Position of GRO J2058+42
Colleen A. Wilson, Martin C. Weisskopf, Mark H. Finger +4
GRO J2058+42 is a 195 s transient X-ray pulsar discovered in 1995 with BATSE. In 1996, RXTE located GRO J2058+42 to a 90% confidence error circle with a 4' radius. On 20 February 2…
A Single Intrinsic Luminosity Function for Both Type-I and Type-II Active Galactic Nuclei
Shuang Nan Zhang
The luminous electromagnetic emission from distant active galactic nuclei (AGNs) including quasars is believed to be powered by accretion onto super-massive black holes (SMBHs). In…
An Off-Axis Model for GRB 031203
Enrico Ramirez-Ruiz, Jonathan Granot, Chryssa Kouveliotou +3
The low luminosity radio emission of the unusually faint GRB 031203 has been argued to support the idea of a class of intrinsically sub-energetic gamma-ray bursts (GRBs), currently…
The broad-band spectrum of the persistent emission from SGR1806-20
S. Molkov, K. Hurley, R. Sunyaev +2
We present the results of an analysis of the quiescent X-ray emission from the Soft Gamma-Ray Repeater SGR1806-20, taken during an INTEGRAL ultra-deep survey of the Galactic Center…
A Deep Search with HST for Late Time Supernova Signatures in the Hosts of XRF 011030 and XRF 020427
Andrew Levan, Sandeep Patel, Chryssa Kouveliotou +16
X-ray Flashes (XRFs) are, like Gamma-Ray Bursts (GRBs), thought to signal the collapse of massive stars in distant galaxies. Many models posit that the isotropic equivalent energie…
The Interplanetary Network Supplement to the BATSE Catalogs of Untriggered Cosmic Gamma Ray Bursts
K. Hurley, B. Stern, J. Kommers +16
We present Interplanetary Network (IPN) detection and localization information for 211 gamma-ray bursts (GRBs) observed as untriggered events by the Burst and Transient Source Expe…