Zobrazeno 1 - 10
of 1 016
pro vyhledávání: '"Barnard, R. A."'
Publikováno v:
Marine Ecology Progress Series, 2020 Feb . 636, 91-106.
Externí odkaz:
https://www.jstor.org/stable/26920658
The transient X-ray source CXOM31 004205.77+411330.43 exhibited several outbursts during our long-term monitoring campaign of ~monthly observations of the M31 center with Chandra. However, the decay profile appears to be unlike those observed from Ga
Externí odkaz:
http://arxiv.org/abs/1503.03409
CXOM31 J004252.030+413107.87 is one of the brightest X-ray sources within the D_25 region of M31, and associated with a globular cluster (GC) known as B135; we therefore call this X-ray source XB135. XB135 is a low mass X-ray binary (LMXB) that appar
Externí odkaz:
http://arxiv.org/abs/1501.06559
The M31 globular cluster X-ray binary XB158 (a.k.a. Bo 158) exhibits intensity dips on a 2.78 hr period in some observations, but not others. The short period suggests a low mass ratio, and an asymmetric, precessing disk due to additional tidal torqu
Externí odkaz:
http://arxiv.org/abs/1501.01978
We have analyzed a ~130 ks XMM-Newton observation of the dynamically confirmed black hole + Wolf-Rayet (BH+WR) X-ray binary (XB) IC10 X-1, covering ~1 orbital cycle. This system experiences periodic intensity dips every ~35 hours. We find that energy
Externí odkaz:
http://arxiv.org/abs/1407.5650
Over the last ~5 years we have identified ~35 black hole candidates (BHCs) in M31 from their X-ray spectra. Our BHCs exhibited 0.3--10 keV spectra consistent with the X-ray binary (XB) hard state, at luminosities that are above the upper limit for ne
Externí odkaz:
http://arxiv.org/abs/1406.6091
We identified a new X-ray transient CXOM31 004252.457+411631.17 (T13) in M31 during a 2013 June Chandra observation. This system is particularly exciting because it is located within 100" of M31*; it is thought that this region of the bulge is suffic
Externí odkaz:
http://arxiv.org/abs/1312.1339
We have created 0.3--10 keV, 13 year, unabsorbed luminosity lightcurves for 528 X-ray sources in the central 20' of M31. We have 174 Chandra observations spaced at ~1 month intervals thanks to our transient monitoring program, deeper observations of
Externí odkaz:
http://arxiv.org/abs/1311.1821
XMM J004243.6+412519 is a transient X-ray source in M31, first discovered 2012 January 15. Different approaches to fitting the brightest follow-up observation gave luminosities 1.3--2.5E+39 erg/s, making it the second ultraluminous X-ray source (ULX)
Externí odkaz:
http://arxiv.org/abs/1305.1302
We have previously identified 10 M31 black hole candidates (BHCs) in M31, from their X-ray properties alone. They exhibit "hard state" emission spectra that are seen at luminosities < ~10% Eddington in X-ray binaries (XBs) containing a neutron star (
Externí odkaz:
http://arxiv.org/abs/1304.7780