Optical decline of HETE J1900.1-2455

Torres, M. A. P.; Rodriguez-Gil, P.; Steeghs, D.; Corral-Santana, J. M.; Casares, J.; Jonker, P. G.
Bibliographical reference

The Astronomer's Telegram, #1090

Advertised on:
5
2007
Number of authors
6
IAC number of authors
0
Citations
5
Refereed citations
2
Description
Following the recently reported decline of the X-ray flux from the millisecond pulsar HETE J1900.1-2455 (Galloway et al. 2007, ATel #1086), we acquired images of its optical counterpart using the Wide Field Camera mounted on the 2.5m Isaac Newton Telescope at La Palma. The images were obtained on 2007 May 29 4:10-4:33 UT and May 30 3:42-4:17 UT and photometrically calibrated using the standard stars SA 113-260 and BD+33 2642.