Results 51 to 60 of about 131,686 (354)

A Comparison of Millisecond Pulsar Populations between Globular Clusters and the Galactic Field

The Astrophysical Journal, 2023
We have performed a systematic study of the rotational, orbital, and X-ray properties of millisecond pulsars (MSPs) in globular clusters (GCs) and compared their nature with those of the MSPs in the Galactic field (GF).
Jongsu Lee, C. Y. Hui, J. Takata, A. K. H. Kong, Pak-Hin Thomas Tam, Kwan-Lok Li, K. S. Cheng   +6 more
doaj   +1 more source

Magnetic Flares on Asymptotic Giant Branch Stars [PDF]

, 2002
We investigate the consequences of magnetic flares on the surface of asymptotic giant branch (AGB) and similar stars. In contrast to the solar wind, in the winds of AGB stars the gas cooling time is much shorter than the outflow time.
Bochanski J. J., Burlaga L. F., Dorfi E. A., Hunsch M., Hunsch M., Joel H. Kastner, Loup C., Noam Soker, Reimers C., Schroder K.-P., Woitke P., Woitke P., Woitke P., Zijlstra A. A.   +13 more
core   +4 more sources

A ROSAT Survey of Contact Binary Stars

, 2005
Contact binary stars are common variable stars which are all believed to emit relatively large fluxes of x-rays. In this work we combine a large new sample of contact binary stars derived from the ROTSE-I telescope with x-ray data from the ROSAT All-Sky ...
Hunsch M., M. T. Geske, McGale P. A., S. J. Gettel, T. A. McKay, Voges W.   +5 more
core   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
A. Collier Cameron, A. J. Norton, Akerlof, Alekseev, Alekseev, B. Enoch, Bejgman, Boller, Bouvier, Bouvier, Bouvier, Brancewicz, Brelstaff, C. A. Haswell, C. Hellier, Chrastina, Collier Cameron, Collier Cameron, D. J. Christian, D. M. Wilson, D. Pollacco, Deeter, Dempsey, Engle, Evans, Feast, Gershberg, Hall, Hall, Hartmann, I. Skillen, J. Irwin, J. P. Nicholas, Jeffries, K. Horne, Koen, Loomis, M. Gallaway, Meinunger, Monet, N. Parley, Neuhauser, P. J. Wheatley, Pallavicini, Pettersen, Pizzolato, Pribulla, Qian, R. A. Street, R. G. West, R. Ryans, Rosner, S. R. Kane, Schmidt, Schmidt, Selam, Skillen, Stanishev, Strassmeier, T. A. Lister, Tamuz, Turner, Vilhu, W. I. Clarkson, Walter, Wegner, Wheatley, Zhang   +67 more
core   +3 more sources

Donor Stars in Black Hole X‐Ray Binaries [PDF]

The Astrophysical Journal, 1999
We study theoretically the formation of black-hole (BH) X-ray binaries. Consistency of the models with the observed relative numbers of systems with low-mass (<2 M_sun) and intermediate-mass (~2 M_sun - M_{BH}) donors leads to severe constraints on the evolutionary parameters of the progenitors.
openaire   +3 more sources

Hydrogen-triggered X-Ray Bursts from SAX J1808.4−3658? The Onset of Nuclear Burning

The Astrophysical Journal, 2023
We present a study of weak, thermonuclear X-ray bursts from the accreting millisecond X-ray pulsar SAX J1808.4−3658. We focus on a burst observed with the Neutron Star Interior Composition Explorer on 2019 August 9, and describe a similar burst observed ...
Sierra Casten, Tod E. Strohmayer, Peter Bult   +2 more
doaj   +1 more source

Neutron star atmosphere composition: the quiescent, low‐mass X‐ray binary in the globular cluster M28 [PDF]

, 2012
Using deep Chandra observations of the globular cluster M28, we study the quiescent X-ray emission of a neutron star in a low-mass X-ray binary in order to constrain the chemical composition of the neutron star atmosphere and the equation of state of ...
M. Servillat, M. Servillat, C. Heinke, W. Ho, J. Grindlay, J. Hong, M. V. D. Berg, M. V. D. Berg, S. Bogdanov   +8 more
semanticscholar   +1 more source

The conspicuous absence of X-ray emission from carbon-enriched Wolf-Rayet stars [PDF]

, 2003
The carbon-rich WC5 star WR 114 was not detected during a 15.9 ksec XMM-Newton observation, implying an upper limit to the X- ray luminosity of L-X less than or similar to 2.5 x 10(30) erg s(-1) and to the X-ray to bolometric luminosity ratio of L- X/L ...
A. M. T. Pollock, Berghöfer, Cassinelli, Castor, Chapman, Coker, Corcoran, Feldmeier, Feldmeier, Figer, Gaensler, Gayley, Gehrels, Groenewegen, Gräfener, Hamann, Harnden, Hasinger, Ignace, Ignace, Ignace, J. C. Brown, Jansen, Kahn, Kitamoto, Kudritzki, L. M. Oskinova, Lamb, Lucy, Lucy, Massey, Owocki, Owocki, Pallavicini, Pollock, Pollock, R. Ignace, Runacres, Schulz, Seward, Skinner, Skinner, Skinner, Smith, Stevens, Tanaka, Torres, Usov, Vacca, van der Hucht, W.-R. Hamann, Waldron, Watson, Wessolowski, Williams, Woosley, Zhekov   +56 more
core   +3 more sources

Strong Correlation between Noise Features at Low Frequency and the KilohertzQuasi-Periodic Oscillations in the X-Ray Binary 4U 1728–34 [PDF]

, 1998
We study the timing properties of the low-mass X-ray binary 4U 1728-34 using recently released data from the Rossi X-Ray Timing Explorer. This binary, like many others with accreting neutron stars, is known to exhibit strong quasi-periodic oscillations ...
E. Ford, M. van der Klis
semanticscholar   +1 more source

Strong X-ray variability in the quiescent state of the neutron star low-mass X-ray binary EXO 1745-248 [PDF]

, 2011
The transient neutron star low-mass X-ray binary EXO 1745−248, located in the globular cluster Terzan 5, was detected during its quiescent state with Chandra in 2003.
N. Degenaar, R. Wijnands
semanticscholar   +1 more source