Results 101 to 110 of about 228,090 (281)

Spectral Formation in Accreting X-Ray Pulsars: Bimodal Variation of the Cyclotron Energy with Luminosity

, 2012
Accretion-powered X-ray pulsars exhibit significant variability of the Cyclotron Resonance Scattering Feature (CRSF) centroid energy on pulse-to-pulse timescales, and also on much longer timescales. Two types of spectral variability are observed.
Araya-Góchez, Arons, Basko, Becker, Becker, Blum, Burnard, C. Ferrigno, Caballero, D. Klochkov, Davidson, Ferrigno, G. Schönherr, Giacconi, Harding, I. Caballero, Imamura, Isenberg, J. Wilms, Klochkov, Lamb, Langer, M. T. Wolff, Mihara, Mowlavi, Negueruela, Negueruela, Nelson, O. Nishimura, P. A. Becker, P. Kretschmar, Parkes, R. Staubert, Reynolds, Shakura, Staubert, Steele, Tananbaum, Trümper, Tsygankov, Tsygankov, Vasco, Wang, Yamamoto   +43 more
core   +1 more source

Mechanical Resonant Sensing of Spin Texture Dynamics in a 2D Antiferromagnet

Advanced Materials, EarlyView.
Detection of antiferromagnetic spin texture in a 2D magnetic crystal is achieved through nanomechanical resonators at radio frequencies. Sharp magnetic transitions that lead to abrupt changes in mechanical linear and nonlinear responses are assigned to antiferromagnetic domain motions.
S M Enamul Hoque Yousuf, Yunong Wang, Shreyas Ramachandran, John Koptur‐Palenchar, Chiara Tarantini, Li Xiang, Stephen McGill, Dmitry Smirnov, Elton J. G. Santos, Philip X.‐L. Feng, Xiao‐Xiao Zhang   +10 more
wiley   +1 more source

The brightest OH maser in the sky: a flare of emission in W75 N

, 2005
A flare of maser radio emission in the OH-line 1665 MHz has been discovered in the star forming region W75 N in 2003, with the flux density of about 1000 Jy.
A. L. Argon, A. V. Alakoz, B. Hutawarakorn, D. S. Shepherd, E. E. Baart, E. E. Lekht, I. E. Val’tts, J. L. Caswell, J. M. Torrelles, L. I. Matveyenko, M. V. Popov, T. R. Hunter, V. I. Slysh, V. I. Slysh, V. I. Slysh, V. Minier, W. Driel van, Z. Abraham   +17 more
core   +1 more source

All‐Heat Control of Magnetization Dynamics on Van der Waals Magnets

Advanced Materials, EarlyView.
Heat dissipation in nanomagnetic devices mediated by femtosecond laser excitation constitutes one of the pressing challenges toward energy‐efficient information communication technologies. Here it is shown that heat and magnetization play together to determine the ultrafast spin dynamics of van der Waals magnets across any substrates and magnet ...
Sumit Haldar, Theodor Griepe, Unai Atxitia, Elton J. G. Santos   +3 more
wiley   +1 more source

An Empirical Study On Imaging Sensitivity Of SKA1-LOW Based on Point Source Sensitivity

The Astronomical Journal
The Square Kilometre Array (SKA) radio telescope will achieve unparalleled sensitivity and angular resolution, substantially progressing our research into the formation and development of the early universe.
Zhaotong Xie, Feng Wang, Ying Mei, Hui Deng, Yunjin Zhu   +4 more
doaj   +1 more source

Bayesian parameter estimation using conditional variational autoencoders for gravitational-wave astronomy Data

, 2021
Hunter Gabbard
openalex   +2 more sources

High Angular Resolution Stellar Imaging with Occultations from the Cassini Spacecraft I: Observational Technique

, 2013
We present novel observations utilising the Cassini spacecraft to conduct an observing campaign for stellar astronomy from a vantage point in the outer solar system. By exploiting occultation events in which Mira passed behind the Saturnian ring plane as
Hedman, Matthew M., Lloyd, James P., Nicholson, Philip D., Stewart, Paul N., Tuthill, Peter G.   +4 more
core   +1 more source

Next‐Generation Image Sensors Based on Low‐Dimensional Semiconductor Materials

Advanced Materials, EarlyView.
Low‐dimensional semiconductor materials are promising candidates for photosensitive components in next‐generation image sensors. This review offers a thorough and timely examination of novel image sensors, covering their working principles, intriguing materials categorized into four main groups, and advanced imaging applications.
Yunxia Hu, Zhaoli Gao, Zhengtang Luo, Liang An   +3 more
wiley   +1 more source

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets

The Astrophysical Journal Supplement Series
Discovering and characterizing exoplanets at the outer edge of the transit method’s sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines.
Paul A. Dalba, Stephen R. Kane, Howard Isaacson, Benjamin Fulton, Andrew W. Howard, Edward W. Schwieterman, Daniel P. Thorngren, Jonathan Fortney, Noah Vowell, Corey Beard, Sarah Blunt, Casey L. Brinkman, Ashley Chontos, Fei Dai, Steven Giacalone, Michelle L. Hill, Molly Kosiarek, Jack Lubin, Andrew W. Mayo, Teo Močnik, Joseph M. Akana Murphy, Erik A. Petigura, Malena Rice, Ryan A. Rubenzahl, Judah Van Zandt, Lauren M. Weiss, Diana Dragomir, David Kipping, Matthew J. Payne, Arpita Roy, Alex Teachey, Steven Villanueva Jr.   +31 more
doaj   +1 more source

Evaluation of the KASI Det

Journal of Astronomy and Space Sciences, 2018
The characterization of detectors installed in space- and ground-based instruments is important to evaluate the system performance. We report the development of a detector performance test system for astronomical applications using the Andor iKon M CCD
Young Sam Yu, Jinsol Kim, Chan Park, Woong-Seob Jeong, Minjin Kim, Seonghwan Choi, Sung-Joon Park   +6 more
doaj   +1 more source