Accreting magnetars: a new type of high-mass X-ray binaries? P. Reig,
... 3 Instituto de Fı́sica Aplicada a las Ciencias y las Tecnologı́as, Universidad de Alicante, E 03080 Alicante, Spain 4 IPL, Universidad de Valencia, PO BOX 22085, 46071 Valencia, Spain 2 Institute ...
... 3 Instituto de Fı́sica Aplicada a las Ciencias y las Tecnologı́as, Universidad de Alicante, E 03080 Alicante, Spain 4 IPL, Universidad de Valencia, PO BOX 22085, 46071 Valencia, Spain 2 Institute ...
Discovery of the optical counterpart to the X
... about 8 were bright enough in Hα to call our attention. The position of each one of these potential candidates with respect to the satellites error circle was then checked. Of these relatively strong Hα emitters only one lied inside the WFC BeppoSAX satellite position uncertainty circles (Fig.1). As ...
... about 8 were bright enough in Hα to call our attention. The position of each one of these potential candidates with respect to the satellites error circle was then checked. Of these relatively strong Hα emitters only one lied inside the WFC BeppoSAX satellite position uncertainty circles (Fig.1). As ...
Many-body Physics in Neutrino Detection and Dark Matter Searches
... For sterile-to-active transition (ms>0; ma≈0), Q2 can be time-like (T→ms), and there is a cross over the real ...
... For sterile-to-active transition (ms>0; ma≈0), Q2 can be time-like (T→ms), and there is a cross over the real ...
don_lamb - New Views of the Universe
... of greatest remaining mystery of GRBs: The Nature of short GRBs Follow-up observations at X-ray, optical, and radio wavelengths have led to compelling evidence that short GRBs come from merging compact binaries (as David Eichler, Mario Livio, Tsvi Piran, and David Schramm conjectured in 1989) It ...
... of greatest remaining mystery of GRBs: The Nature of short GRBs Follow-up observations at X-ray, optical, and radio wavelengths have led to compelling evidence that short GRBs come from merging compact binaries (as David Eichler, Mario Livio, Tsvi Piran, and David Schramm conjectured in 1989) It ...
Multiwavelength observations of XTE J1118+480`s outburst
... Comparison with USNO B1.0 plate R band: only one of the two sources varied in the XMM EPIC 4” uncertainty circle. ...
... Comparison with USNO B1.0 plate R band: only one of the two sources varied in the XMM EPIC 4” uncertainty circle. ...
Chapter 14
... Model of the X-Ray Binary SS 433 Optical spectrum shows spectral lines from material in the jet. Two sets of lines: one blue-shifted, one red-shifted ...
... Model of the X-Ray Binary SS 433 Optical spectrum shows spectral lines from material in the jet. Two sets of lines: one blue-shifted, one red-shifted ...
The Be/X-ray transient V0332153: evidence for a tilt between the
... accretion disc, was detected (Takeshima et al. 1994). V0332153 has not been detected by the BATSE experiment since the CGRO satellite started operations in 1991 April (Bildsten et al. 1997). It is not detected with any significance by the All-Sky Monitor (ASM) on board RXTE either, according to the ...
... accretion disc, was detected (Takeshima et al. 1994). V0332153 has not been detected by the BATSE experiment since the CGRO satellite started operations in 1991 April (Bildsten et al. 1997). It is not detected with any significance by the All-Sky Monitor (ASM) on board RXTE either, according to the ...
Astronomy Astrophysics − Orbital phase-resolved spectroscopy of 4U 1538
... ISS Science Project Office, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan School of Physics, Faculty of Science, Monash University, Clayton, 3800 Victoria, Australia ...
... ISS Science Project Office, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan School of Physics, Faculty of Science, Monash University, Clayton, 3800 Victoria, Australia ...
Jul y 10-12,
... Almost all Galactic black hole (BH) binaries with low mass donors are transient X-ray sources; we expect most of the X-ray transients (XRTs) observed in external galaxies to be BH binaries also. Obtaining period estimates for extra-galactic XRTs is challenging, but the resulting period distribution ...
... Almost all Galactic black hole (BH) binaries with low mass donors are transient X-ray sources; we expect most of the X-ray transients (XRTs) observed in external galaxies to be BH binaries also. Obtaining period estimates for extra-galactic XRTs is challenging, but the resulting period distribution ...
1410.PDF
... the meteorite targets' response to high rates of dynamic loading provided by the ablation driven shock waves and the ensuing high pressure generation throughout the target sample. Previous work on these same meteorite targets used pulsed lasers to generate pressures from 0.7 to 11 GPa2, the results ...
... the meteorite targets' response to high rates of dynamic loading provided by the ablation driven shock waves and the ensuing high pressure generation throughout the target sample. Previous work on these same meteorite targets used pulsed lasers to generate pressures from 0.7 to 11 GPa2, the results ...
2 workshop on X-ray and XUV active optics
... Free entrance concerts in Piazza Unità d'Italia: Friday 10th October from 8.00 p.m. – Young bands will open the first night of concerts: the Harddiskaunt, ska band coming from Varese province, who debuted in ’97 with an album called “Greatest Hits n.7”, the Carnicats, regional hip hop group consisti ...
... Free entrance concerts in Piazza Unità d'Italia: Friday 10th October from 8.00 p.m. – Young bands will open the first night of concerts: the Harddiskaunt, ska band coming from Varese province, who debuted in ’97 with an album called “Greatest Hits n.7”, the Carnicats, regional hip hop group consisti ...
Galactic sources science with AGILE The case of the Carina Region
... characterized by a large Field of View FoV (2.5 and 1 sr for the gamma-ray and hard X-ray bands, respectively), optimal angular resolution and good sensitivity [19]. During its 2 years of operation AGILE gathered an extensive dataset for the Gamma Ray sky, with particular focus to Galactic plane reg ...
... characterized by a large Field of View FoV (2.5 and 1 sr for the gamma-ray and hard X-ray bands, respectively), optimal angular resolution and good sensitivity [19]. During its 2 years of operation AGILE gathered an extensive dataset for the Gamma Ray sky, with particular focus to Galactic plane reg ...
Cartwheel Galaxy - Chandra X
... 10. A study of ULXs has determined that very few X-ray sources with luminosity greater than 1040 erg s−1 remain after ~15 Myr and few remain after ~30 Myr. 11. In the Cartwheel galaxy, it appears that a shock wave is moving radially outward in the disk. 9 sources of the 21 detected in the Chandra im ...
... 10. A study of ULXs has determined that very few X-ray sources with luminosity greater than 1040 erg s−1 remain after ~15 Myr and few remain after ~30 Myr. 11. In the Cartwheel galaxy, it appears that a shock wave is moving radially outward in the disk. 9 sources of the 21 detected in the Chandra im ...
cohen_paris_v2_may2009 - Astronomy at Swarthmore College
... Photoelectric absorption’s effect on the profile shapes can be used as a mass-loss rate diagnostic: massloss rates are lower than previously thought. ...
... Photoelectric absorption’s effect on the profile shapes can be used as a mass-loss rate diagnostic: massloss rates are lower than previously thought. ...
Lecture 2. Isolated Neutron Stars – I.
... The new zoo of young neutron stars During the last >10 years it became clear that neutron stars can be born very differently. In particular, absolutely non-similar to the Crab pulsar. ...
... The new zoo of young neutron stars During the last >10 years it became clear that neutron stars can be born very differently. In particular, absolutely non-similar to the Crab pulsar. ...
HEA_Pulsars_2002
... spinning motion (P usually < 1sec, dP/dt>0) • Pulsating X-ray sources / X-ray pulsators compact objects (generally neutron stars) in binary systems. Accrete matter from normal star companion. (P ~ 10s secs, dP/dt<0) ...
... spinning motion (P usually < 1sec, dP/dt>0) • Pulsating X-ray sources / X-ray pulsators compact objects (generally neutron stars) in binary systems. Accrete matter from normal star companion. (P ~ 10s secs, dP/dt<0) ...
Ion-supported tori: a thermal bremsstrahlung model for the X
... The spectrum of the XRB, with its ~ 30-keV rollover, requires some spectral uniformity in its constituent sources. Since it resembles thermal bremsstrahlung in the 3-60 keV range, a mechanism which produces such radiation in galaxy nuclei would be particularly appealing. A way of standardizing the t ...
... The spectrum of the XRB, with its ~ 30-keV rollover, requires some spectral uniformity in its constituent sources. Since it resembles thermal bremsstrahlung in the 3-60 keV range, a mechanism which produces such radiation in galaxy nuclei would be particularly appealing. A way of standardizing the t ...
Millisecond Pulsars in X-Ray Binaries - CIERA
... be the highly flexible pointing and scheduling ability of RXTE . The Galactic X-ray sky is highly variable, with some sources lying dormant for years and only intermittently becoming active in X-ray emission. The combination of having both the RXTE All Sky Monitor to determine when an X-ray transien ...
... be the highly flexible pointing and scheduling ability of RXTE . The Galactic X-ray sky is highly variable, with some sources lying dormant for years and only intermittently becoming active in X-ray emission. The combination of having both the RXTE All Sky Monitor to determine when an X-ray transien ...
Investigation of substrates and mounting techniques for the High
... substrates for our hard X-ray optics. These glasses are produced by a method, known as ‘overflow’, in which the glass sheet is never in mechanical contact with any surface. Deviations from uniformity are small, with the most pronounced error being a variation in thickness of 25 µm from one side of t ...
... substrates for our hard X-ray optics. These glasses are produced by a method, known as ‘overflow’, in which the glass sheet is never in mechanical contact with any surface. Deviations from uniformity are small, with the most pronounced error being a variation in thickness of 25 µm from one side of t ...
Detecting g-ray Sources - Pennsylvania State University
... V-image of electron-positron pair g-ray direction is determined by energy-weighted average of the electron and positron tracks ...
... V-image of electron-positron pair g-ray direction is determined by energy-weighted average of the electron and positron tracks ...
Pulsars
... - Lattice of neutron-rich nuclei (electrons penetrate nuclei to combine with protons and form neutrons) with free degenerate neutrons and degenerate relativistic electron gas. - For > 4.3.1014 kg/m3 – the neutron drip point, massive nuclei are unstable and ...
... - Lattice of neutron-rich nuclei (electrons penetrate nuclei to combine with protons and form neutrons) with free degenerate neutrons and degenerate relativistic electron gas. - For > 4.3.1014 kg/m3 – the neutron drip point, massive nuclei are unstable and ...
The spin and orbit of the newly discovered pulsar IGR J17480-2446
... shown by the source, as well as of its aperiodic timing properties, will appear in a companion paper. The 2.5–25 keV light curve recorded by PCU2 of the Proportional Counter Array (PCA) on-board RXTE, with the burst intervals removed and background subtracted, is plotted in Fig. 1. The count rate in ...
... shown by the source, as well as of its aperiodic timing properties, will appear in a companion paper. The 2.5–25 keV light curve recorded by PCU2 of the Proportional Counter Array (PCA) on-board RXTE, with the burst intervals removed and background subtracted, is plotted in Fig. 1. The count rate in ...
A systematic study of X-ray variability in the ROSAT all
... They generated lightcurves and found flares as well as irregular variability among young stars. There are more examples for variability studies of individual sources using the RASS data (Schmitt 1994), however, up to now no systematic search for variability in the total all-sky survey data has been ...
... They generated lightcurves and found flares as well as irregular variability among young stars. There are more examples for variability studies of individual sources using the RASS data (Schmitt 1994), however, up to now no systematic search for variability in the total all-sky survey data has been ...
History of X-ray astronomy
The history of X-ray astronomy begins in the 1920s, with interest in short wave communications for the U.S. Navy. This was soon followed by extensive study of the earth's ionosphere. By 1927, interest in the detection of X-ray and ultraviolet (UV) radiation at high altitudes inspired researchers to launch Goddard's rockets into the upper atmosphere to support theoretical studies and data gathering. The first successful rocket flight equipped with instrumentation able to detect solar ultraviolet radiation occurred in 1946. X-ray solar studies began in 1949. By 1973 a solar instrument package orbited on Skylab providing significant solar data.In 1965 the Goddard Space Flight Center program in X-ray astronomy was initiated with a series of balloon-borne experiments. In the 1970s this was followed by high altitude sounding rocket experiments, and that was followed by orbiting (satellite) observatories.The first rocket flight to successfully detect a cosmic source of X-ray emission was launched in 1962 by a group at American Science and Engineering (AS&E).X-ray wavelengths reveal information about the bodies (sources) that emit them.