Zobrazeno 1 - 10
of 73
pro vyhledávání: '"K. S. Dhuga"'
Autor:
H Avdan, E Sonbas, K S Dhuga, A Vinokurov, E Göğüş, S Avdan, Y N Solovyeva, A E Kostenkov, E S Shablovinskaya, D Goktas
Archival {\it XMM-Newton}, {\it Chandra} and {\it Hubble Space Telescope (HST)} data have been used to study the X-ray and optical properties of two candidate ultraluminous X-ray sources (ULXs) in NGC\,4536. In order to search for potential optical c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0d7a12cd2ad311f8d7f3d14c4df37c8
http://arxiv.org/abs/2303.12141
http://arxiv.org/abs/2303.12141
In this work, we deploy archival data from {\it HST}, {\it Chandra}, {\it XMM-Newton}, and {\it Swift-XRT}, to probe the nature of 9 candidate ULXs in NGC 1672. Specifically, our study focuses on using the precise source positions obtained via improv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::feadec7efc4b6120877100c569a6eb50
Similar to black-hole X-ray binary (BHXRB) transients, hysteresis-like state transitions are also seen in some neutron-star X-ray binaries (NSXRBs). Using a method based on wavelets and lightcurves constructed from archival RXTE observations, we extr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18ce23974b5ece1acdbe3510b5823379
http://arxiv.org/abs/2101.04201
http://arxiv.org/abs/2101.04201
Autor:
S Allak, A Akyuz, İ Akkaya Oralhan, S Avdan, N Aksaker, A Vinokurov, F Soydugan, E Sonbas, K S Dhuga
We present the results of a temporal and spectral analysis of the transient source ULX-4 in the galaxy M51. The data used were drawn from Chandra, XMM-Newton and Swift-XRT archives, spanning the years 2000-2019. The X-ray flux of the source is seen t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5a2fdde0a8264cf352c83b9e5fd1706
The results of a temporal analysis of observations for a sample of nine low-mass X-ray binaries (LMXBs) are presented. Of these sources, five host a neutron star (NS) primary (4U1608-52, Aql X-1, 4U1705-44, GX17+2 and Cyg X-2), and four host a black
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e1018c3c10731c24b3b7ac3dd88b6d0
A recent study of a small sample of X-ray binaries (XRBs) suggests a significant softening of spectra of neutron star (NS) binaries as compared to black hole (BH) binaries in the luminosity range 10$^{34}$ - 10$^{37}$ erg/s. This softening is quantif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a55a7c73663d7e2c8fdc86722e1d36d
http://arxiv.org/abs/1801.07107
http://arxiv.org/abs/1801.07107
The emission-line dwarf galaxy NGC 3413 is known to host a bright X-ray source near its optical center. The 0.3-10 keV luminosity of this source is estimated to be approximately 10$^{39}$ erg$s^{-1}$ potentially qualifying it as an ultra-luminous X-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fc802d4ab3c8dd031b4aa5321027e8d
Autor:
Craig B. Markwardt, K. S. Dhuga, Jack Tueller, Richard Mushotzky, Timothy R. Kallman, D. C. Morris, Randall K. Smith
Publikováno v:
The Astrophysical Journal. 699:892-901
We report on Suzaku observations of four unidentified sources from the INTEGRAL and Swift BAT Galactic plane surveys. All the sources have a large neutral hydrogen column density and are likely members of an emerging class of heavily absorbed high ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c4c3c14f8dbde0925aaf25a374dc21a
https://doi.org/10.1088/0004-637x/699/1/892
https://doi.org/10.1088/0004-637x/699/1/892
Autor:
A. Kotwal, Christopher Morris, R. W. Garnett, S.L. Morris, J.D. Silk, J. M. O’Donnell, Charles M. Laymon, T. L. Ekenberg, D. L. Watson, J. D. Zumbro, K. S. Dhuga, C. F. Moore, M. Burlein, M.W. Rawool-Sullivan, S. J. Seestrom, W. M. Amos, H. T. Fortune
Publikováno v:
Physical Review C. 53:1167-1172
Angular distributions for {pi}{sup +} and {pi}{sup {minus}} elastic and inelastic scattering from the {ital Z}=28 closed-proton-shell nuclei {sup 58,60,62,64}Ni have been measured at an incident pion kinetic energy of 180 MeV. Values for the neutron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f50e086941a2f549daee891c7124be5d
https://doi.org/10.1103/physrevc.53.1167
https://doi.org/10.1103/physrevc.53.1167
Autor:
J. W. Price, M. E. Sadler, Steven J. Greene, R. W. Caress, W. J. Briscoe, C. Bennhold, C. Pillai, D.B. Barlow, B. L. Berman, Ivo Šlaus, B. M. K. Nefkens, S. K. Matthews, K. S. Dhuga, M. F. Taragin, S.N. Dragic, S.S. Kamalov, I. Supek, N.J. Nicholas, L. Tiator, L. D. Isenhower
Publikováno v:
Physical Review C. 51:2534-2541
We have measured differential cross sections for the elastic scattering of charged pions from {sup 3}H and {sup 3}He into the backward hemisphere. Near the peak of the delta resonance, at {ital T}{sub {pi}}=180 MeV, an angular distribution covering 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57041b105b24bb17eb69ce028448e810
https://doi.org/10.1103/physrevc.51.2534
https://doi.org/10.1103/physrevc.51.2534