278 citations · 6.8k across the 175 of their papers we have counts for
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Discovery of a Second Transient Low-Mass X-ray Binary in the Globular Cluster NGC 6440
C. O. Heinke, D. Altamirano, H. N. Cohn +11
We have identified a new transient luminous low-mass X-ray binary, NGC 6440 X-2, with Chandra/ACIS, RXTE/PCA, and Swift/XRT observations of the globular cluster NGC 6440. The disco…
Discovery of a 205.89 Hz accreting-millisecond X-ray pulsar in the globular cluster NGC 6440
D. Altamirano, A. Patruno, C. Heinke +6
We report the discovery of the second accreting millisecond X-ray pulsar (AMXP) in the globular cluster NGC 6440. Pulsations with a frequency of 205.89 Hz were detected with the Ro…
The long-term evolution of the accreting millisecond X-ray pulsar Swift J1756.9-2508
Alessandro Patruno, Diego Altamirano, Chris Messenger
We present a timing analysis of the 2009 outburst of the accreting millisecond X-ray pulsar Swift J1756.9-2508, and a re-analysis of the 2007 outburst. The source shows a short rec…
Type I X-ray bursts, burst oscillations and kHz quasi-periodic oscillations in the neutron star system IGR J17191-2821
D. Altamirano, M. Linares, A. Patruno +6
We present a detailed study of the X-ray energy and power spectral properties of the neutron star transient IGR J17191-2821. We discovered four instances of pairs of simultaneous k…
A very rare triple-peaked type-I X-ray burst in the low-mass X-ray binary 4U 1636-53
Guobao Zhang, Mariano Mendez, Diego Altamirano +2
We have discovered a triple-peaked X-ray burst from the low-mass X-ray binary (LMXB) 4U 1636-53 with the Rossi X-ray Timing Explorer (RXTE). This is the first triple-peaked burst r…
Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455
Anna L. Watts, Diego Altamirano, Manuel Linares +8
We report the discovery of burst oscillations from the intermittent accretion-powered millisecond pulsar (AMP) HETE J1900.1-2455, with a frequency approximately 1 Hz below the know…