One of the most useful diagnostic tools for the detection of inclined magnetic fields in solar chromospheric and coronal structures is that based on the fact that the Hanle effect in forward scattering at the solar disk center creates linear polarization in some spectral lines, such as those of the He I 10830 Å multiplet. Here we show the

We have studied the spatial clustering of high redshift (z > 1) extremely red objects (EROs) as a function of photometric redshift in the GOODS Southern Field using public data. A remarkable overdensity of extremely red galaxies (I - Ks > 4) is found at an average photometric redshift zphot = 1.10. Nine objects (six are EROs) within 50 arcsec of

We discuss the prospects for detecting the Rees-Sciama (RS) effect associated with merging clusters of galaxies in millimetric observations. Using the extended Press-Schechter formalism, we characterize the distribution of the parameters describing the mergers, and use these results to generate a mock catalogue of cluster mergers. We use realistic

We present the first results from a large-area (~80deg×20deg), sparsely sampled, two-filter (B and R) imaging survey toward the Canis Major stellar overdensity, which is claimed to be a disrupting Milky Way satellite galaxy. Using stellar color-magnitude diagrams reaching to B~22 mag, we provide a first delineation of its surface density

Available from the Minor Planet Center.

After the recent reports of activity of the accreting millisecond pulsar XTE J1751-305 (ATELs #1045, #1046 and #1051) we obtained another Swift/XRT (~4.3ksec) observation of the field starting on April 11th 2007 23:59. The source was not detected with a 2-10 keV upper limit of ~5E-14 erg/ cm2/s, corresponding to a luminosity of 3.8E32 (d/8kpc)**2