Results 51 to 60 of about 915,890 (292)

The Infrared and X-Ray Continua of Quasars: Is there a Connection ? [PDF]

Symposium - International Astronomical Union, 1989
The first Einstein IPC X-ray spectra of quasars had slopes similar to their infrared spectra (Elvis et al. 1986) suggesting that the infrared and x-ray continua of quasars might be two ends of a single power-law extending over at least 4 decades of the electromagnetic spectrum.
Martin Elvis, Jonathan McDowell, Belinda J. Wilkes   +2 more
openaire   +1 more source

Group IV platforms for the mid-infrared [PDF]

, 2013
We have investigated several material platforms for the mid-infrared including silicon on insulator (SOI), polycrystalline silicon, and suspended silicon structures.
Krauss, T.F., Reed, G.T., Peacock, A.C., M. Sorel, Ben Masaud, T.M., M. Muneeb, T. M. Ben Masaud, Chen, X., Mashanovich, G.Z., Chen, X, Mashanovich, GZ, Roelkens, Günther, Muneeb, M., H. M. H. Chong, Chong, HMH, M. Strain, Strain, M, G. T. Reed, A. C. Peacock, Ben Masaud, TM, Strain, M., Sorel, M., Roelkens, G.C., G. Z. Mashanovich, Krauss, TF, G. C. Roelkens, Nedeljković, M., Reed, GT, Peacock, AC, T. F. Krauss, Nedeljkovic, M, M. Nedeljkovic, Chong, H.M.H., X. Chen, Muneeb, Muhammad   +34 more
core   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

LABORATORY INVESTIGATION OF X-RAY PHOTOLYSIS OF ETHANOL ICE AND ITS IMPLICATION ON ASTROPHYSICAL ENVIRONMENTS

Revista UniVap, 2023
Here we present experimental results on the irradiation of ethanol ice (CH3CH2OH) by broadband soft X-rays to simulate the effect processing of organic-rich astrophysical ices by space radiation.
Sergio Pilling, Fabricio M. Freitas
doaj   +1 more source

An X‐Ray, Infrared, and Submillimeter Flare of Sagittarius A* [PDF]

The Astrophysical Journal, 2008
Energetic flares are observed in the Galactic supermassive black hole Sagittarius A* from radio to X-ray wavelengths. On a few occasions, simultaneous flares have been detected in IR and X-ray observations, but clear counterparts at longer wavelengths have not been seen.
Marrone, D. P., Baganoff, F. K., Morris, M. R., Moran, James, Ghez, A. M., Hornstein, S. D., Dowell, C. D., Munoz, Diego Jose, Bautz, M. W., Ricker, G. R., Brandt, W. N., Garmire, G. P., Lu, J. R., Matthews, K., Zhao, J.‐H., Rao, R., Bower, G. C.   +16 more
openaire   +3 more sources

Very High Energy Gamma-Rays from Binary Systems [PDF]

, 2010
This thesis presents a study of the very high energy (VHE) gamma-ray emission from X-ray binary systems using the H.E.S.S. imaging atmospheric Cherenkov array.
DICKINSON, HUGH,JOHN, Dickinson, Hugh John   +1 more
core  

Latest results on Jovian disk X-rays from XMM-Newton [PDF]

, 2007
We present the results of a spectral study of the soft X-ray emission (0.2–2.5 keV) from low-latitude (‘disk’) regions of Jupiter. The data were obtained during two observing campaigns with XMM-Newton in April and November 2003.
Waite Jr., J. H., Gladstone, G.R., Rodriguez, P., Branduardi-Raymont, G., Cravens, T.E., Gladstone, G. R., Ramsay, G., Soria, R., Elsner, R. F., Waite, J.H., Bhardwaj, A., Elsner, R.F., Cravens, T. E.   +12 more
core   +1 more source

Long‐Term Efficacy of Immunotherapy in Autoimmune Autonomic Ganglionopathy—A 10‐Year Follow Up Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Autoimmune autonomic ganglionopathy (AAG) is a rare but potentially treatable cause of severe autonomic failure. Evidence guiding long‐term immunotherapy, treatment sequencing, and residual autonomic impairment is limited. We evaluated long‐term treatment response, residual autonomic dysfunction, and relapse patterns in patients with
Giacomo Chiaro, Shiwen Koay, Gordon T. Ingle, Patricia McNamara, Laura Watson, Fion Bremner, Valeria Iodice   +6 more
wiley   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

The Mid‐Infrared Properties of X‐Ray Sources [PDF]

The Astrophysical Journal, 2008
We combine the results of the Spitzer IRAC Shallow Survey and the Chandra XBootes Survey of the 8.5 square degrees Bootes field of the NOAO Deep Wide- Field Survey to produce the largest comparison of mid-IR and X-ray sources to date. The comparison is limited to sources with X-ray fluxes >8x10-15 erg cm-2s-1 in the 0.5-7.0 keV range and mid-IR ...
Gorjian, V., Brodwin, M., Kochanek, C. S., Murray, S., Stern, D., Brand, K., Eisenhardt, P. R., Ashby, M. L. N., Barmby, P., Brown, M. J. I., Dey, A., Forman, W., Jannuzi, B. T., Jones, C., Kenter, A. T., Pahre, M. A., Shields, J. C., Werner, M. W., Willner, S. P.   +18 more
openaire   +2 more sources