Direct ultrafast parametric amplification pumped by a picosecond thin-disk laser

Posted by klaurent Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Jing Wang, Peng Yuan, Dongfang Zhang, Guoqiang Xie, Kainan Xiong | Summary: Optical quadratic nonlinearity is ultrafast in nature, while parametric interaction usually manifests only the broadband characteristic. Enormous progress has been made toward broadband phase-matching for parametric amplification and wide applications. In existing devices of broadband […]


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Angling for x-ray pulsar geometry with polarimetry

Posted by klaurent MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Victor Doroshenko, Juri Poutanen, Sergey Tsygankov, Valery Suleimanov, Matteo Bachetti | Summary: Using observations of X-ray pulsar Her X-1 by the Imaging X-ray Polarimetry Explorer, we report on a highly significant detection of the polarization signal from an accreting neutron star. The observed degree of the […]


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Possibilities and Limitations of Kinematically Identifying Stars from Accreted Ultra-Faint Dwarf Galaxies

Posted by klaurent MIT

Kavli Affiliate: Anna Frebel | First 5 Authors: Kaley Brauer, Hillary D. Andales, Alexander P. Ji, Anna Frebel, Mohammad K. Mardini | Summary: The Milky Way has accreted many ultra-faint dwarf galaxies (UFDs), and stars from these galaxies can be found throughout our Galaxy today. Studying these stars provides insight into galaxy formation and early […]


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X-ray polarization detection of Cassiopeia A with IXPE

Posted by klaurent Stanford

Kavli Affiliate: Nicola Omodei | First 5 Authors: Jacco Vink, Dmitry Prokhorov, Riccardo Ferrazzoli, Patrick Slane, Ping Zhou | Summary: We report on a 5$sigma$ detection of polarized 3-6 keV X-ray emission from the supernova remnant Cassiopeia A with the Imaging X-ray Polarimetry Explorer (IXPE) mission. The overall polarization degree of 1.8 $pm$ 0.3% is […]


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ET White Paper: To Find the First Earth 2.0

Posted by klaurent Peking

Kavli Affiliate: Subo Dong | First 5 Authors: Jian Ge, Hui Zhang, Weicheng Zang, Hongping Deng, Shude Mao | Summary: We propose to develop a wide-field and ultra-high-precision photometric survey mission, temporarily named "Earth 2.0 (ET)". This mission is designed to measure, for the first time, the occurrence rate and the orbital distributions of Earth-sized […]


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Med-DANet: Dynamic Architecture Network for Efficient Medical Volumetric Segmentation

Posted by klaurent Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Wenxuan Wang, Chen Chen, Jing Wang, Sen Zha, Yan Zhang | Summary: For 3D medical image (e.g. CT and MRI) segmentation, the difficulty of segmenting each slice in a clinical case varies greatly. Previous research on volumetric medical image segmentation in a slice-by-slice manner conventionally use the […]


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When quantum corrections alter the predictions of classical field theory for scalar field dark matter

Posted by klaurent Stanford

Kavli Affiliate: Tom Abel | First 5 Authors: Andrew Eberhardt, Michael Kopp, Tom Abel, , | Summary: We investigate the timescale on which quantum corrections alter the predictions of classical field theory for scalar field dark matter. This is accomplished by including second order terms in the evolution proportional to the covariance of the field […]


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TESS Hunt for Young and Maturing Exoplanets (THYME) VII : Membership, rotation, and lithium in the young cluster Group-X and a new young exoplanet

Posted by klaurent MIT

Kavli Affiliate: George R. Ricker | First 5 Authors: Elisabeth R. Newton, Rayna Rampalli, Adam L. Kraus, Andrew W. Mann, Jason L. Curtis | Summary: The public, all-sky surveys Gaia and TESS provide the ability to identify new young associations and determine their ages. These associations enable study of planetary evolution by providing new opportunities […]


Continue.. TESS Hunt for Young and Maturing Exoplanets (THYME) VII : Membership, rotation, and lithium in the young cluster Group-X and a new young exoplanet

TESS Hunt for Young and Maturing Exoplanets (THYME) VII : Membership, rotation, and lithium in the young cluster Group-X and a new young exoplanet

Posted by klaurent MIT

Kavli Affiliate: Gabor Furesz | First 5 Authors: Elisabeth R. Newton, Rayna Rampalli, Adam L. Kraus, Andrew W. Mann, Jason L. Curtis | Summary: The public, all-sky surveys Gaia and TESS provide the ability to identify new young associations and determine their ages. These associations enable study of planetary evolution by providing new opportunities to […]


Continue.. TESS Hunt for Young and Maturing Exoplanets (THYME) VII : Membership, rotation, and lithium in the young cluster Group-X and a new young exoplanet

Measurement of the branching fraction for the decay $B to K^{ast}(892)ell^+ell^-$ at Belle II

Posted by klaurent Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: F. Abudinén, I. Adachi, R. Adak, K. Adamczyk, L. Aggarwal | Summary: We report a measurement of the branching fraction of $B to K^{ast}(892)ell^+ell^-$ decays, where $ell^+ell^- = mu^+mu^-$ or $e^+e^-$, using electron-positron collisions recorded at an energy at or near the $Upsilon(4S)$ mass and corresponding to […]


Continue.. Measurement of the branching fraction for the decay $B to K^{ast}(892)ell^+ell^-$ at Belle II