Results 41 to 50 of about 1,208,682 (349)

The Chandra Deep Field-North Survey. XIV. X-ray detected Obscured AGNs and Starburst Galaxies in the Bright Submm Source Population

, 2002
We provide X-ray constraints and perform the first X-ray spectral analyses for bright (f_850>=5mJy; S/N>=4) SCUBA sources in an 8.4'x8.4' area of the 2 Ms Chandra Deep Field-North survey containing the Hubble Deep Field-North.
A. E. Hornschemeier, Blain A. W., C. Vignali, D. M. Alexander, D. P. Schneider, Downes D., F. E. Bauer, G. Chartas, G. P. Garmire, Maiolino R., Matt G., Matt G., Rengarajan T. N., Rowan-Robinson M., S. C. Gallagher, Severgnini P., Soucail G., Vignati P., W. N. Brandt, Zezas A.   +19 more
core   +1 more source

ROSAT X-ray sources in the field of the LMC. II.Statistics of background AGN and X-ray binaries

, 2002
About 200 X-ray sources from a sample of spectrally hard ROSAT PSPC sources, given in the catalog of Haberl & Pietsch (1999), and observed in a ~60 square degree field of the LMC during several archival pointed observations with a wide range of exposure ...
Bessell, Brinkmann, Brinkmann, Chu, Coe, Comastri, Cowley, Dickey, Filipovic, Filipovic, Finger, Gardiner, Gardiner, Gilli, Gilli, Gochermann, Grothues, Haberl, Haberl, Haberl, Haberl, Haberl, Haberl, Hasinger, Hasinger, Kahabka, Kahabka, Kennicutt, Kim, Kontizas, Liu, Mannucci, Maragoudaki, Marx, Massey, McGee, Meaburn, Morrison, Olsen, P. Kahabka, Pietrzynski, Popov, Rebeirot, Reid, Reid, Reynolds, Sasaki, Schmidt, Schmidt-Kaler, Schmidtke, Shapley, Smith, Stanimirovic, Supper, Thompson, van den Bergh, Wang, Westerlund, Will, Wright, Yokogawa   +60 more
core   +1 more source

X-RAY EMISSION OF ICRF SOURCES

Odessa Astronomical Publications, 2018
Considering increasing requirements to the coordinates measurement precision by the end of XX century International Astronomical Union commenced implementation of the new astrometric system ICRF (International Celestial Reference Frame) .
V. V. Voitsekhovskiy, A. Tugay, V. V. Tkachuk, S. Yu. Shevchenko   +3 more
doaj   +1 more source

The X-ray properties of high-z FRI candidates in the COSMOS field [PDF]

, 2011
We report the X-ray analysis of a sample of candidate high-redshift ...
Andreon, Antonucci, Balmaverde, Barkhouse, Becker, Best, Blackburn, Blandford, Capetti, Cappelluti, Cash, Chiaberge, Chiaberge, Chiaberge, Demarco, Donato, Donzelli, E. Tundo, Eisenhardt, Elvis, Evans, Evans, Fabian, Fanaroff, Fassbender, Ferrarese, Gawroński, Gebhardt, Gehrels, Ghisellini, Gladders, Gopal-Krishna, Hardcastle, Hasinger, Hill, Hopkins, Ilbert, Jackson, Kaiser, Kalberla, Komatsu, Ledlow, Lilly, Livio, M. Chiaberge, Muzzin, Nousek, Owen, Owen, P. Tozzi, Pierre, Prestage, Reynolds, Rosati, Santos, Scarpa, Schinnerer, Scoville, Suhada, Tanaka, Tozzi, Tozzi, Tremaine, Trump, Urry, Wilson, Xue, Zirbel   +67 more
core   +1 more source

Adherence to Protocol Recommendations for Children With Wilms Tumour in Two Consecutive Studies in the United Kingdom and Ireland—Does Variation Matter?

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background and Aims Wilms tumour (WT) has excellent event‐free and overall survival (OS). However, small differences exist between countries participating in the same international study. This led us to examine variation in adherence to protocol recommendations as a potential contributing factor.
Suzanne Tugnait, R. Al‐Saadi, A. Lopez‐Cortes, K. Dzhuma, M. Oostveen, J. Brok, S. Irtan, M. Weeks, J. Bate, S. Baker, R. Williams, M. Powis, D. Saunders, O. Olsen, T. Watson, S. Shelmerdine, S. Vaidya, L. Howell, C. Duncan, G. M. Vujanic, C. Stiller, G. P. Balchin, T. Chowdhury, K. Pritchard‐Jones   +23 more
wiley   +1 more source

The X-ray binary population in M33: II. X-ray spectra and variability

, 2007
In this paper we investigate the X-ray spectra and X-ray spectral variability of compact X-ray sources for 3 Chandra observations of the Local Group galaxy M33. The observations are centered on the nucleus and the star forming region NGC 604.
A. Zezas, D.‐W. Kim, G. Fabbiano, H.‐J. Grimm, J. McDowell, Okada Y., Predehl P.   +6 more
core   +1 more source

LUMINOUS SUPERSOFT X-RAY SOURCES [PDF]

Annual Review of Astronomy and Astrophysics, 1997
Luminous supersoft X-ray sources were discovered with the Einstein observatory and have been established as an important new class of X-ray binaries on the basis of observations with the Roentgen Satellite (ROSAT). They have extremely soft spectra (equivalent blackbody temperatures of ∼15–80 eV) and are highly luminous (bolometric luminosities of 1036 ...
Kahabka, P., van den Heuvel, E.P.J.
openaire   +3 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

X-ray-diffraction and electrical-transport imaging of superconducting superhydride (La,Y)H10

Nature Communications
Understanding how microscopic structural domains govern macroscopic electronic properties is central to advancing hydride superconductors, yet such correlations remain poorly resolved under pressure.
Abdul Haseeb Manayil Marathamkottil, Kui Wang, Nilesh P. Salke, Muhtar Ahart, Alexander C. Mark, Rostislav Hrubiak, Stella Chariton, Dean Smith, Vitali B. Prakapenka, Maddury Somayazulu, Nenad Velisavljevic, Russell J. Hemley   +11 more
doaj   +1 more source