The WMAP results on the scalar spectral index n and its running with scale, though preliminary, open a very interesting window to physics at very high energies...

Optical imaging of RX J105453.3+552102 was carried out at the 2.5m NOT telescope in March 2008. Optical deep images were used for studying the properties of the...

We report the identification of RXJ0636 as a new intermediate polar. The system's light curves and spectral analysis, together with a variety of its physical...

We report the detection of a type I X-ray burst with burst oscillations during an RXTE-PCA observation of the recently discovered accreting millisecond pulsar...

RXTE PCA Bulge scans detected activity of what appeared to be a known source. However, based on the results presented below, and the report of a new INTEGRAL...

After the recent report of X-ray re-brightening (ATel #2608), RXTE has observed the peculiar neutron star X-ray binary Cir X-1 eleven times during the last two...

Prompted by the recent report of increased Swift/BAT activity from the neutron star X-ray transient XTE J1701-462 (ATel #3028), the source was observed for ~1.4...

We report on the RXTE follow up observations of the black hole candidate IGR J17091-3624 (ATEL #3144, #3159, #3167, #3203) after the report of mHz quasi...

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