The Deadly Spider Has Been Found !

A few days ago (Feb. 5th) I wrote a post about a special source, named XSS J12270-4859, a cryptic name behind a binary system composed by a neutron star and a normal companion star slightly less massive than our Sun. The special property of this system is that it belongs to a new family of... Continue Reading →

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A Deadly Spider in Disguise

My colleagues and I have recently studied a new peculiar binary system (XSS J12270-4859) formed by a neutron star and a low mass star that can be found in the constellation Centaurus, in the southern hemisphere. Our recent work, lead by Cees Bassa from ASTRON, can be found online at this link. XSS J12270-4859 has  been discovered... Continue Reading →

The Missing Link

(Update: one paper is now published http://iopscience.iop.org/2041-8205/781/1/L3/) Today I'd like to  tell a brief story and discuss three recent papers accepted or submitted to The Astrophysical Journal & The Astrophysical Journal Letters (and make some self-promotion as I've been involved in writing two such papers). The story is about an extraordinary object, called PSR J1023+0038,... Continue Reading →

Some Free Codes for Top Research in Astronomy

I am mostly an observer working in the field of high energy astrophysics, doing experiments and performing observations with space and ground based telescopes. However, once in a while I also like very much to use numerical codes to solve complex physical problems that require large computational resources. So I would like to share the... Continue Reading →

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