TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Posselt, B.
A1  - Schreyer, K.
A1  - Perna, R.
A1  - Sommer, M. W.
A1  - Klein, B.
A1  - Slane, P.
T1  - Submillimetre observations of RXJ1856.5-3754
JF  - MNRAS (Monthly Notices of the Royal Astronomical Society)
N2  - We report on submillimetre bolometer observations of the isolated neutron star RX J1856.5−3754 using the Large Apex Bolometer Camera bolometer array on the Atacama Pathfinder Experiment telescope. No cold dust continuum emission peak at the position of RX J1856.5−3754 was detected. The 3σ flux density upper limit of 5 mJy translates into a cold dust mass limit of a few earth masses. We use the new submillimetre limit, together with a previously obtained H-band limit, to constrain the presence of a gaseous, circumpulsar disc. Adopting a simple irradiated disc model, we obtain a mass accretion limit of Graphic and a maximum outer disc radius of ∼1014 cm. By examining the projected proper motion of RX J1856.5−3754, we speculate about a possible encounter of the neutron star with a dense fragment of the CrA molecular cloud a few thousand years ago.
KW  - circumstellar matter
KW  - stars: individual: RXJ1856.5-3754
SN  - 0035-8711
SS  - 0035-8711
U6  - https://doi.org/10.1111/j.1365-2966.2010.16557.x
DO  - https://doi.org/10.1111/j.1365-2966.2010.16557.x
VL  - 405
IS  - 3
SP  - 1840
EP  - 1844
PB  - Oxford University Press
ER  -