Sentences with phrase «x-ray point sources»
In order to identify these new X-ray sources, we have carried out a near infrared follow - up observation using ESO / NTT infrared camera on 2002/7/28 an... ▽ More We have carried out a deep X-ray observation on a typical Galactic plane region with the Chandra ACIS - I instrument with unprecedented sensitivity and spatial resolution, and detected 274 unidentified X-ray point sources in the \ ~ 500 arcmin2 region.
https://arxiv.org/
Abstract: The Chandra X-ray Observatory has now discovered nearly 10,000 X-ray point sources in the 2 x 0.8 degree region around the Galactic Center (Muno 2009).
Not exact matches
Pinpointing the sources of gravitational waves will allow astronomers to point other telescopes their way, boosting the chances of learning more about them via x-rays, gamma - rays, radio waves, neutrinos and more.
On the same day, NASA's Chandra X-ray Observatory took a picture of the source by pointing at it for 4 hours.
Possible explanations for the CDF - S X-ray source, according to the researchers, are a GRB that is not pointed toward Earth, or a GRB that lies beyond the small galaxy.
The scientists used the data collected to build a spherical image to pinpoint the source of the X-ray activity and identify areas to investigate further at different time points.
Using data from the Chandra X-ray Observatory, Q. Daniel Wang of the University of Massachusetts, Amherst, and colleagues identified nearly 1,000 point - like sources that contribute to the x-ray emission, only 20 of which were previously kX-ray Observatory, Q. Daniel Wang of the University of Massachusetts, Amherst, and colleagues identified nearly 1,000 point - like sources that contribute to the x-ray emission, only 20 of which were previously kx-ray emission, only 20 of which were previously known.
Using both X-ray and NIR information, we can efficiently classify the point X-ray sources detected in the Galactic plane.
We have also carried out a precise spectral study of the Galactic diffuse X-ray emission excluding the point sources.
This European Space Agency (ESA) satellite for direct - pointing and lunar - occultation observation of X-ray sources beyond the solar system was launched into a highly eccentric orbit (apogee 200,000 km, perigee 500 km) almost perpendicular to that of the moon on May 26, 1983.
We have detected, as well as strong diffuse emission, 274 new point X-ray sources (4 sigma confidence) within two partially overlapping fields (~ 250 arcmin ^ 2 in total) down to the flux limit ~ 3 x 10 ^ -LCB--1... ▽ More Using the Chandra ACIS - I instruments, we have carried out a deep X-ray observation on the Galactic plane region at (l, b) ~ (28.5, 0.0), where no discrete X-ray sources have been known previously.
We have detected 274 new point X-ray sources (4 sigma confidence) as well as strong Galactic diffuse emission within two partially overlapping ACIS - I fields (~ 250 arcmin ^ 2in total).
Many point sources are detected either in the soft X-ray band (below 2 keV) or in the hard band (above 2 keV), and only a small number of sources are detected in both energy bands.
Sum of all the detected point source fluxes accounts for only ~ 10 % of the total X-ray flux in the field of view.
We have detected, as well as strong diffuse emission, 274 new point X-ray sources (4 sigma confidence) within two partially overlapping fields (~ 250 arcmin ^ 2 in total) down to the flux limit ~ 3 x 10 ^ -LCB--15 -RCB- $ erg s ^ -LCB--1 -RCB- cm ^ -LCB--2 -RCB-(2 — 10 keV) and ~ 7 x 10 ^ -LCB--16 -RCB- erg s ^ -LCB--1 -RCB- cm ^ -LCB--2 -RCB-(0.5 — 2 keV).