ar X iv : a st ro - p h / 98 09 36 7 v 1 2 8 Se p 19 98 RXTE OBSERVATIONS OF PSR J 1105 − 6107

ar X iv : a st ro - p h / 98 03 02 5 v 1 3 M ar 1 99 8 RXTE / ASM OBSERVATIONS OF PSR B 1259 − 63

RXTE/ASM observations of PSR B1259−63 near the 1997 periastron passage find no emission brighter than ∼10 times that detected by ASCA during the 1994 periastron encounter, demonstrating that the pulsar is unlikely to have undergone even brief episodes of accretion.

ar X iv : a st ro - p h / 97 12 26 7 v 1 1 8 D ec 1 99 7 X - Ray Emission from the Radio Pulsar PSR J 1105 − 6107

We have detected significant X-ray emission from the direction of the young radio pulsar PSR J1105−6107 using the ASCA Observatory. The 11σ detection includes 460 background-subtracted source counts derived using data from all four ASCA detectors. The emission shows no evidence of pulsations; the pulsed fraction is less than 31%, at the 90% confidence level. The X-ray emission can be characteri...

ar X iv : a st ro - p h / 03 09 52 3 v 1 1 9 Se p 20 03 1 The X - ray emission of the Crab - like pulsar PSR J 0537 − 6910

In this paper we present some preliminary result on the spectral and timing analysis of the X-ray pulsed emission from the 16 ms pulsar PSR J0537−6910 in the energy range 0.1–30 keV, based on archival BeppoSAX and RossiXTE observations. This pulsar, discovered by Marshall et al. [1] in the LMC field with RXTE, is the fastest spinning pulsar associated with a supernova remnant. It is characteriz...

ar X iv : a st ro - p h / 98 11 19 7 v 1 1 2 N ov 1 99 8 The ‘ bare ’ strange stars might not be bare

ar X iv : a st ro - p h / 98 09 29 4 v 1 2 4 Se p 19 98 GALAXIES AT REDSHIFTS z > 5 Kenneth

Here we describe our attempts to establish statistically complete samples of very high redshift galaxies by obtaining photometric redshifts of galaxies in Medium Deep Survey (MDS) fields and photometric and spectroscopic redshifts of galaxies in very deep STIS slitless spectroscopy fields. On the basis of this analysis, we have identified galaxies of redshift z = 4.92 in an MDS field and of red...