Bibcode
Ramsay, G.; Marsh, T. R.; Kupfer, T.; Dhillon, V. S.; Steeghs, D.; Woudt, P.; Groot, P.
Bibliographical reference
Astronomy and Astrophysics, Volume 617, id.A88, 6 pp.
Advertised on:
9
2018
Journal
Citations
3
Refereed citations
2
Description
We present high speed optical photometric observations made using the
NTT and ULTRACAM of the optical counterpart of 3XMMJ051034.6-670353,
which was recently identified as an X-ray source showing a modulation on
a period of 23.6 min. Although the optical counterpart is faint (g =
21.4), we find that the u'g'r' light curves show a periodic modulation
on a period which is consistent with the X-ray period. We also obtained
three low resolution spectra of 3XMMJ051034.6-670353 using the Gemini
South Telescope and GMOS. There is no evidence for strong emission lines
in the optical spectrum of 3XMMJ051034.6-670353. We compare and contrast
the optical and X-ray observations of 3XMMJ051034.6-670353 with the
ultra compact binaries HM Cnc and V407 Vul. We find we can identify a
distribution of binary masses in which stable direct impact accretion
can occur.
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Accreting black-holes and neutron stars in X-ray binaries provide an ideal laboratory for exploring the physics of compact objects, yielding not only confirmation of the existence of stellar mass black holes via dynamical mass measurements, but also the best opportunity for probing high-gravity environments and the physics of accretion; the most
Montserrat
Armas Padilla