Results 61 to 70 of about 133,948 (219)

The bright unidentified gamma-ray source 1FGL J1227.9-4852: Can it be associated with an LMXB?

, 2011
We present an analysis of high energy (HE; 0.1-300 GeV) gamma-ray observations of 1FGL J1227.9-4852 with the Fermi Gamma-ray Space Telescope, follow-up radio observations with the Australia Telescope Compact Array, Giant Metrewave Radio Telescope and ...
A. B. Hill, A. Szostek, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Archibald, Atwood, Bertin, Bird, Bogdanov, Bond, Butters, Cusumano, D. Kozieł, de Martino, E. C. Ferrara, E. Koerding, F. Camilo, G. Dubus, Kataoka, Kijak, Kramer, Lomb, M. Kerr, Manchester, Masetti, Mattox, Mauch, P. G. Edwards, Pretorius, R. Dubois, R. H. D. Corbet, S. Corbel, Saitou, Sault, Saz Parkinson, Scargle, Skrutskie, Tam P., Thorstensen, Ubertini, Wang, Ł. Stawarz   +49 more
core   +1 more source

No detectable radio emission from the magnetar-like pulsar in Kes 75 [PDF]

, 2008
The rotation-powered pulsar PSR J1846-0258 in the supernova remnant Kes 75 was recently shown to have exhibited magnetar-like X-ray bursts in mid-2006.
Anne M. Archibald, Haslam C. G. T., Mardia K. V., Margaret A. Livingstone, Maura A. McLaughlin, Melatos A., Ransom S. M., Victoria M. Kaspi   +7 more
core   +3 more sources

Hidden O‐Deglycosylation Activity Triggers O → C Rearrangement for Aryl Di‐C‐Glucoside Formation by the C‐Glycosyltransferase From Fortunella crassifolia

Biotechnology and Bioengineering, EarlyView.
Here, we uncovered an unexpected O‐deglycosylation activity of the C glycosyltransferase (FcCGT), forming phloretin (1) from phloretin 2'‐O‐glucoside (2). In the presence of UDP, FcCGT catalyzes the O→C rearrangement to yield nothofagin (3). Upon additional UDP‐glucose, further C‐glycosylation occurs, forming phloretin 3',5'‐di‐C‐glucoside (4 ...
Tuo Li, Annika J. E. Borg, Leo Krammer, Rolf Breinbauer, Bernd Nidetzky   +4 more
wiley   +1 more source

Chan–Lam Cross‐Coupling With Alkylboron Reagents: From Transmetallation to Radical Pathways

European Journal of Organic Chemistry, EarlyView.
Alkylative Chan–Lam coupling overcomes intrinsic transmetallation limitations of alkylboron reagents by engaging radical pathways. Recent advances reveal how radical and radical–polar crossover mechanisms enable mild C(sp3)—heteroatom bond formation. This minireview highlights key mechanistic insights and emerging strategies that transform alkylboron ...
Nicolas G.‐Simonian, Andrea Serafino, Luc Neuville, Géraldine Masson   +3 more
wiley   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

CREATING THE RT-32 RADIO TELESCOPE ON THE BASIC OF MARK-4B ANTENNA SYSTEM. 1. MODERNIZATION PROJECT AND FIRST RESULTS

Radio Physics and Radio Astronomy, 2019
Purpose: Creating a radio telescope based on the MARK-4B antenna system being developed for telecommunication applications, determining the possibilities of using the broadband multirange operation of a beam wave-guided antenna system and to evaluate ...
O. M. Ulyanov, O. M. Reznichenko, V. V. Zakharenko, A. V. Antyufeyev, A. M. Korolev, O. M. Patoka, V. I. Prisiazhnii, A. V. Poichalo, V. V. Voityuk, V. N. Mamarev, V. V. Ozhinskii, V. P. Vlasenko, V. M. Chmil, V. I. Lebed, M. I. Palamar, A. V. Chaikovskii, Yu. V. Pasternak, M. A. Strembitskii, M. P. Natarov, S. O. Steshenko, V. V. Glamazdyn, A. S. Shubny, A. A. Kirilenko, D. Y. Kulik, A. A. Konovalenko, L. M. Lytvynenko, Ya. S. Yatskiv   +26 more
doaj   +1 more source

A New 6–15 GHz Solar Radio Observation System

The Astrophysical Journal Supplement Series, 2023
In this study, we have developed a centimeter-band solar radio telescope covering the 6–15 GHz frequency band. The radio telescope has the outstanding advantages of a large instantaneous sampling bandwidth and wide frequency coverage.
Lei Zhang, Yanrui Su, Zhao Wu, Shuwang Chang, Yao Chen, Fabao Yan   +5 more
doaj   +1 more source

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

Multistatic Localisation in Passive Radar System for LEO Space Objects Observation Using Terrestrial Illuminators and LOFAR Radio Telescope

IET Radar, Sonar & Navigation
The paper introduces and discusses the concept and findings of experimental trials focused on the passive multistatic radar localisation of low‐Earth orbit (LEO) space objects using terrestrial illuminators and a LOFAR (LOw‐Frequency ARray) radio ...
Konrad Jędrzejewski, Mateusz Malanowski, Marek Płotka, Krzysztof Kulpa, Mariusz Pożoga   +4 more
doaj   +1 more source

CLASS B0827+525: `Dark lens' or binary radio-loud quasar? [PDF]

, 2000
We present radio, optical, near-infrared and spectroscopic observations of the source B0827+525. We consider this source as the best candidate from the Cosmic Lens All-Sky Survey (CLASS) for a `dark lens' system or binary radio-loud quasar.
Blandford, R. D., Browne, I. W. A., de Bruyn, A. G., Fassnacht, C. D., Helbig, P., Hoekstra, H., Jackson, N., Koopmans, L. V. E., Marlow, D. R., Myers, S. T., Pearson, T. J., Readhead, A. C. S., Rusin, D., Wilkinson, P. N., Xanthopoulos, E.   +14 more
core   +2 more sources