activity
19962026
most citedThe Nature of Ultra-Luminous Compact X-Ray Sources in Nearby Spiral Galaxies

509 citations · 5.2k across the 130 of their papers we have counts for

collaborators
Showing 2001Show all

6 papers · 1 filter

astro-ph2001★ 24 cited

The Effect of Changes in the ASCA Calibration on the Fe-Kalpha Lines in Active Galaxies

T. Yaqoob, U. Padmanabhan, T. Dotani +1

The ASCA calibration has evolved considerably since launch and indeed, is still evolving. There have been concerns in the literature that changes in the ASCA calibration have resul…

astro-ph2001

Subtleties in Measuring Iron K Lines in AGN

T. Yaqoob, U. Padmanabhan, T. Dotani +3

Chandra and XMM observations are showing that the Fe-K emission lines in type 1 AGN are composite, in general consisting of a narrow and a broad component. We review the latest Cha…

astro-ph2001★ 12 cited

Very low luminosities from the accretion-driven millisecond X-ray pulsar SAX J1808.4-3658 during quiescence

Rudy Wijnands, Lucien Kuiper, Jean in 't Zand +3

We have observed the millisecond X-ray pulsar SAX J1808.4-3658 on three occasions during its 2000 outburst with the BeppoSAX satellite. The source was highly variable and erratic d…

astro-ph2001★ 41 cited

Detection of Pulsed X-ray Emission from The Fastest Millisecond Pulsar PSR B1937+21 with ASCA

M. Takahashi

We have detected pulsed X-ray emission from the fastest millisecond pulsar known, PSR B1937+21 (P=1.558 msec), with ASCA. The pulsar is detected as a point source above …

astro-ph2001★ 16 cited

The X-ray Spectrum of the Rapid Burster using the Chandra HETGS

H. L. Marshall, R. Rutledge, D. W. Fox +7

We present observations of the Rapid Burster (RB, also known as MXB 1730-335) using the Chandra High Energy Transmission Grating Spectrometer. The average interval between type II…

astro-ph2001★ 9 cited

On the X-ray fast-time variability of Sco X-2 (GX 349+2)

Paul M. O'Neill, Erik Kuulkers, Ravi K. Sood +1

We have analysed archived Ginga data on the Z source Sco X-2 (GX349+2). We present the first detailed investigation of its X-ray fast-time variability, as a function of position in…