Results 11 to 20 of about 6,638 (169)

Second-Order Gauge-Invariant Cosmological Perturbation Theory: Current Status

Advances in Astronomy, 2010
The current status of the recent developments of the second-order gauge-invariant cosmological perturbation theory is reviewed. To show the essence of this perturbation theory, we concentrate only on the universe filled with a single scalar field ...
Kouji Nakamura
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Unveiling the nature of SN 2022jli: The first double-peaked stripped-envelope supernova showing periodic undulations and dust emission at late times

Astronomy & Astrophysics
We present optical and infrared observations from maximum light until around +800 days of supernova (SN) 2022jli, a peculiar stripped-envelope (SE) SN showing two maxima, each one with a peak luminosity of about 3 × 1042 erg s−1, separated by 50 days ...
Cartier Régis, Contreras Carlos, Stritzinger Maximilian, Hamuy Mario, Ruiz-Lapuente Pilar, Prieto Jose L., Anderson Joseph P., Cikota Aleksandar, Gerlach Matthias   +8 more
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Cooperative polariton dynamics in feedback-coupled cavities

Nature Communications, 2017
Rabi oscillations of magnons typically do not have few photon control of single spin quantum systems. Here, the authors use a feedback cavity architecture to increase magnon-photon cooperativity, enabling increased control of light-matter interactions in
Bimu Yao, Y. S. Gui, J. W. Rao, S. Kaur, X. S. Chen, W. Lu, Y. Xiao, H. Guo, K. -P. Marzlin, C. -M. Hu   +9 more
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Fast Infrared Detector for Time-Domain Astronomy

Instruments
Multi-messenger astronomy and time-domain astronomy are strongly linked even if they do not have the same objectives. Multi-messenger astronomy is an astrophysical observation approach born by the simultaneous, even if casual, detection of a few events ...
Alessandro Drago
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On-board Data Processing to Lower Bandwidth Requirements on an Infrared Astronomy Satellite: Case of Herschel-PACS Camera

EURASIP Journal on Advances in Signal Processing, 2005
This paper presents a new data compression concept, “on-board processing,” for infrared astronomy, where space observatories have limited processing resources.
Christian Reimers, Franz Kerschbaum, Roland Ottensamer, Horst Bischof, Ahmed Nabil Belbachir   +4 more
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DECam Multimessenger Astrophysics Pipeline. I. From Raw Data to Single-exposure Candidates

The Astronomical Journal
We introduce a pipeline that performs rapid image subtraction and source selection to detect transients, with a focus on identifying gravitational-wave optical counterparts using the Dark Energy Camera (DECam). In this work, we present the pipeline steps
Shenming Fu, Thomas Matheson, Aaron Meisner, Yuanyuan Zhang, Sebastián Vicencio, Destry Saul   +5 more
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Design of the Optical System for a Protomodel of Space Infrared Cryogenic System [PDF]

Journal of Astronomy and Space Sciences, 2005
Many technical challenges are being tried for a large space infrared telescope, which is one of the major objectives of the Strategic Technology Road Map (STRM) of KASI (Korea Astronomy and Space Science Institute).
Dae-Hee Lee, Soojong Park, In-Soo Yuk, Uk-Won Nam, Ho Jin, Sungho Lee, Jeong-Yeol Han, Hyung Suk Yang, Dong Lak Kim, Geon-Hee Kim, Seong-Je Park, Byung-Hyuk Kim, Han Jeong   +12 more
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Influence of stripline coupling on the magnetostatic mode line width of an yttrium-iron-garnet sphere

AIP Advances, 2018
We study the effect of stripline coupling on the damping of magnetostatic modes in an yttrium-iron-garnet sphere. Both the magnetostatic dispersion and line width display a pronounced dependence on the YIG-stripline separation, with the coupling ...
Y. Yang, M. Harder, J. W. Rao, B. M. Yao, W. Lu, Y. S. Gui, C.-M. Hu   +6 more
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Analysis of Dark Data of the PICNIC IR Arrays in the CIBER [PDF]

Journal of Astronomy and Space Sciences, 2010
We have measured and analyzed the dark data of two PICNIC IR arrays (P574 and P560) obtained through the Cosmic Infrared Background ExpeRiment (CIBER).
D. H. Lee, M. G. Kim, K. Tsumura, M. Zemcov, U. W. Nam, J. Bock, J. Battle, V. Hristov, T. Renbarger, T. Matsumoto, I. Sullivan, L. R. Levenson, P. Mason, S. Matsuura, G. H. Kim   +14 more
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Jets in Low-Mass Protostars

Universe
Jets and outflows are key components of low-mass star formation, regulating accretion and shaping the surrounding molecular clouds. These flows, traced by molecular species at (sub)millimeter wavelengths (e.g., CO, SiO, SO, H2CO, and CH3OH) and by atomic,
Somnath Dutta
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