Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Peacock, Mark B."'
Autor:
Dage, Kristen C., Kundu, Arunav, Thygesen, Erica, Bahramian, Arash, Haggard, Daryl, Irwin, Jimmy A., Maccarone, Thomas J., Nair, Sneha, Peacock, Mark B., Strader, Jay, Zepf, Stephen E.
We have identified three ultraluminous X-ray sources (ULXs) hosted by globular clusters (GCs) within NGC 1316's stellar system. These discoveries bring the total number of known ULXs in GCs up to 20. We find that the X-ray spectra of the three new so
Externí odkaz:
http://arxiv.org/abs/2103.16576
Autor:
Dage, Kristen C., Zepf, Stephen E., Thygesen, Erica, Bahramian, Arash, Kundu, Arunav, Maccarone, Thomas J., Peacock, Mark B., Strader, Jay
We have identified seven ultraluminous X-ray sources (ULXs) which are coincident with globular cluster candidates (GCs) associated with M87. ULXs in the old GC environment represent a new population of ULXs, and ones likely to be black holes. In this
Externí odkaz:
http://arxiv.org/abs/2007.00671
Autor:
Dage, Kristen C., Zepf, Stephen E., Bahramian, Arash, Strader, Jay, Maccarone, Thomas J., Peacock, Mark B., Kundu, Arunav, Steele, Matthew M., Britt, Christopher T.
RZ2109 is the first of several extragalactic globular clusters shown to host an ultraluminous X-ray source. RZ2109 is particularly notable because optical spectroscopy shows it has broad, luminous [OIII] 4959,5007 emission, while also having no detec
Externí odkaz:
http://arxiv.org/abs/1909.02683
Autor:
Dage, Kristen C., Zepf, Stephen E., Peacock, Mark B., Bahramian, Arash, Noroozi, Omid, Kundu, Arunav, Maccarone, Thomas J.
A number of ultraluminous X-ray sources (ULXs) are physically associated with extragalactic globular clusters (GCs). We undertake a systematic X-ray analysis of eight of the brightest of these sources. We fit the spectra of the GC ULXs to single powe
Externí odkaz:
http://arxiv.org/abs/1902.05073
Autor:
Dage, Kristen C., Zepf, Stephen E., Bahramian, Arash, Kundu, Arunav, Maccarone, Thomas J., Peacock, Mark B.
We present the results of long-term monitoring of the X-ray emission from the ultraluminous X-ray source XMMUJ122939.9+075333 in the extragalactic globular cluster RZ2109. The combination of the high X-ray luminosity, short term X-ray variability, X-
Externí odkaz:
http://arxiv.org/abs/1806.01848
Autor:
Peacock, Mark B., Zepf, Stephen E., Kundu, Arunav, Maccarone, Thomas J., Lehmer, Bret D., Maraston, Claudia, Gonzalez, Anthony H., Eufrasio, Rafael T., Coulter, David A.
We present constraints on variations in the initial mass function (IMF) of nine local early-type galaxies based on their low mass X-ray binary (LMXB) populations. Comprised of accreting black holes and neutron stars, these LMXBs can be used to constr
Externí odkaz:
http://arxiv.org/abs/1705.01115
Autor:
Peacock, Mark B., Zepf, Stephen E., Kundu, Arunav, Maccarone, Thomas J., Lehmer, Bret D., Gonzalez, Anthony H., Maraston, Claudia
We present the X-ray point source population of NGC 7457 based on 124 ks of Chandra observations. Previous deep Chandra observations of low mass X-ray binaries (LMXBs) in early-type galaxies have typically targeted the large populations of massive ga
Externí odkaz:
http://arxiv.org/abs/1701.00482
We investigate the integrated far-ultraviolet (FUV) emission from globular clusters. We present new FUV photometry of M~87's clusters based on archival HST WFPC2 F170W observations. We use these data to test the reliability of published photometry ba
Externí odkaz:
http://arxiv.org/abs/1609.04819
Autor:
Peacock, Mark B., Zepf, Stephen E.
We present the X-ray luminosity function (XLF) of low mass X-ray binaries (LMXBs) in the globular clusters (GCs) and fields of seven early-types galaxies. These galaxies are selected to have both deep Chandra observations, which allow their LMXB popu
Externí odkaz:
http://arxiv.org/abs/1512.06077
Autor:
Peacock, Mark B.
A multiwavelength analysis of M31’s globular clusters and their low mass X-ray binaries by Mark B. Peacock Globular clusters (GCs) are dense groups of thousands to millions of stars. They are often very old systems with ages similar to those of the
Externí odkaz:
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525767