Zobrazeno 1 - 10
of 298
pro vyhledávání: '"Hornschemeier, A. E."'
Autor:
Moon, Hannah, Wik, Daniel R., Antoniou, V., Eracleous, M., Hornschemeier, Ann E., Lazzarini, Margaret, Lehmer, Bret D., Vulic, Neven, Williams, Benjamin F., Maccarone, T. J., Pottschmidt, K., Ptak, Andrew, Yukita, Mihoko, Zezas, Andreas
Publikováno v:
ApJ 970, 167, 2024
Using hard (E>10 keV) X-ray observations with NuSTAR, we are able to differentiate between accretion states, and thus compact object types, of neutron stars and black holes in X-ray binaries (XRBs) in M31, our nearest Milky Way-type neighbor. Using t
Externí odkaz:
http://arxiv.org/abs/2408.02828
Autor:
Yukita, M., Ptak, A., Hornschemeier, A. E., Wik, D., Maccarone, T. J., Pottschmidt, K., Zezas, A., Antoniou, V., Ballhausen, R., Lehmer, B. D., Lien, A., Williams, B., Baganoff, F., Boyd, P. T., Enoto, T., Kennea, J., Page, K. L., Choi, Y.
We report the identification of a bright hard X-ray source dominating the M31 bulge above 25 keV from a simultaneous NuSTAR-Swift observation. We find that this source is the counterpart to Swift J0042.6+4112, which was previously detected in the Swi
Externí odkaz:
http://hdl.handle.net/10150/623858
http://arizona.openrepository.com/arizona/handle/10150/623858
http://arizona.openrepository.com/arizona/handle/10150/623858
Autor:
Bodaghee, Arash, Antoniou, Vallia, Zezas, Andreas, Tomsick, John A., Jordan, Zachary, Frechette, Eric, Jackson, Brenton, Agnew, Ryan, Hornschemeier, Ann E., Rodriguez, Jerome
We present the two-point cross-correlation function between high-mass X-ray binaries (HMXBs) in the Small Magellanic Cloud (SMC) and their likely birthplaces (OB Associations: OBAs). This function compares the spatial correlation between the observed
Externí odkaz:
http://arxiv.org/abs/2107.02802
Autor:
Vulic, N., Hornschemeier, A. E., Haberl, F., Basu-Zych, A. R., Kyritsis, E., Zezas, A., Salvato, M., Ptak, A., Bogdan, A., Kovlakas, K., Wilms, J., Sasaki, M., Liu, T., Merloni, A., Dwelly, T., Brunner, H., Lamer, G., Maitra, C., Nandra, K., Santangelo, A.
Publikováno v:
A&A 661, A16 (2022)
The $\it{eROSITA}$ Final Equatorial Depth Survey (eFEDS), completed during the calibration and performance verification phase of the $\it{eROSITA}$ instrument on $\it{Spectrum\, Roentgen\, Gamma}$, delivers data at and beyond the final depth of the f
Externí odkaz:
http://arxiv.org/abs/2106.14526
Autor:
Basu-Zych, Antara R., Hornschemeier, Ann E., Haberl, Frank, Vulic, Neven, Wilms, Jorn, Zezas, Andreas, Kovlakas, Konstantinos, Ptak, Andrew, Dauser, Thomas
eROSITA, launched on 13 July 2019, will be completing the first all-sky survey in the soft and medium X-ray band in nearly three decades. This 4-year survey, finishing in late 2023, will present a rich legacy for the entire astrophysics community and
Externí odkaz:
http://arxiv.org/abs/2008.01870
Autor:
Lazzarini, M., Williams, B. F., Hornschemeier, A. E., Antoniou, V., Vasilopoulos, G., Haberl, F., Vulic, N., Yukita, M., Zezas, A., Bodaghee, A., Lehmer, B. D., Maccarone, T. J., Ptak, A., Wik, D., Fornasini, F. M., Hong, Jaesub, Kennea, J. A., Tomsick, J. A., Venters, T., Udalski, A., Cassity, A.
We present a source catalog from the first deep hard X-ray ($E>10$ keV) survey of the Small Magellanic Cloud (SMC), the NuSTAR Legacy Survey of the SMC. We observed three fields, for a total exposure time of 1 Ms, along the bar of this nearby star-fo
Externí odkaz:
http://arxiv.org/abs/1909.11110
Autor:
Lehmer, Bret D., Eufrasio, Rafael T., Tzanavaris, Panayiotis, Basu-Zych, Antara, Fragos, Tassos, Prestwich, Andrea, Yukita, Mihoko, Zezas, Andreas, Hornschemeier, Ann E., Ptak, Andrew
We present new Chandra constraints on the X-ray luminosity functions (XLFs) of X-ray binary (XRB) populations, and their scaling relations, for a sample of 38 nearby galaxies (D = 3.4-29 Mpc). Our galaxy sample is drawn primarily from the Spitzer inf
Externí odkaz:
http://arxiv.org/abs/1905.05197
Autor:
Vulic, N., Hornschemeier, A. E., Antoniou, V., Basu-Zych, A. R., Binder, B., Fornasini, F. M., Furst, F., Haberl, F., Heida, M., Lehmer, B. D., Maccarone, T. J., Ptak, A. F., Sivakoff, G. R., Tzanavaris, P., Wik, D. R., Williams, B. F., Wilms, J., Yukita, M., Zezas, A.
What are the most important conditions and processes governing the growth of stellar-origin compact objects? The identification of compact object type as either black hole (BH) or neutron star (NS) is fundamental to understanding their formation and
Externí odkaz:
http://arxiv.org/abs/1903.09858
Autor:
Vulic, Neven, Hornschemeier, Ann E., Wik, Daniel R., Yukita, Mihoko, Zezas, Andreas, Ptak, Andrew F., Lehmer, Bret D., Antoniou, Valsamo, Maccarone, Thomas J., Williams, Benjamin F., Fornasini, Francesca M.
Nearby galaxy surveys have long classified X-ray binaries (XRBs) by the mass category of their donor stars (high-mass and low-mass). The NuSTAR observatory, which provides imaging data at E $>10$ keV, has enabled the classification of extragalactic X
Externí odkaz:
http://arxiv.org/abs/1808.05617
Autor:
Lazzarini, M., Hornschemeier, A. E., Williams, B. F., Wik, D., Vulic, N., Yukita, M., Zezas, A., Lewis, A. R., Durbin, M., Ptak, A., Bodaghee, A., Lehmer, B. D., Antoniou, V., Maccarone, T.
We present 15 high mass X-ray binary (HMXB) candidates in the disk of M31 for which we are able to infer compact object type, spectral type of the donor star, and age using multiwavelength observations from NuSTAR, Chandra, and the Hubble Space Teles
Externí odkaz:
http://arxiv.org/abs/1806.03305