Hard X-ray Morphological and Spectral Studies of The Galactic Center Molecular Cloud Sgr B2: Constraining Past Sgr A* Flaring Activity

Kavli Affiliate: Melania Nynka | First 5 Authors: Shuo Zhang, Charles J. Hailey, Kaya Mori, Maïca Clavel, Régis Terrier | Summary: Galactic Center (GC) molecular cloud Sgr B2 is the best manifestation of an X-ray reflection nebula (XRN) reprocessing a past giant outburst from the supermassive black hole Sgr A*. Alternatively, Sgr B2 could be […]


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SN~2012cg: Evidence for Interaction Between a Normal Type Ia Supernova and a Non-Degenerate Binary Companion

Kavli Affiliate: Kaisey Mandel | First 5 Authors: G. H. Marion, Peter J. Brown, Jozsef Vinkó, Jeffrey M. Silverman, David J. Sand | Summary: We report evidence for excess blue light from the Type Ia supernova SN 2012cg at fifteen and sixteen days before maximum B-band brightness. The emission is consistent with predictions for the […]


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Magnetic torque anomaly in the quantum limit of the Weyl semi-metal NbAs

Kavli Affiliate: Brad Ramshaw | First 5 Authors: Philip J. W. Moll, Andrew C. Potter, Brad Ramshaw, Kimberly Modic, Scott Riggs | Summary: Electrons in materials with linear dispersion behave as massless Weyl- or Dirac-quasiparticles, and continue to intrigue physicists due to their close resemblance to elusive ultra-relativistic particles as well as their potential for […]


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SOI Pixel Sensor for Gamma-Ray Imaging

Kavli Affiliate: Tadashi Orita | First 5 Authors: Kenji Shimazoe, Fairuz Atiqah, Yuri Yoshihara, Akihiko Koyama, Hiroyuki Takahashi | Summary: SOI (Silicon-On-Insulator) pixel sensor is promising technology for developing the high position resolution detector by integrating the small pixels and circuits in the monolithic way. The event driven (trigger mode) SOI based pixel sensor has […]


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Development of the Pixelated Photon Detector Using Silicon on Insulator Technology for TOF-PET

Kavli Affiliate: Tadashi Orita | First 5 Authors: Akihiro Koyama, Kenji Shimazoe, Hiroyuki Takahashi, Tadashi Orita, Yasuo Arai | Summary: To measure light emission pattern in scintillator, higher sensitivity and faster response are required to photo detector. Such as single photon avalanche diode (SPAD), conventional pixelated photo detector is operated at Geiger avalanche multiplication. However […]


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First-principles evaluation of Multi-valent cation insertion into Orthorhombic V$_2$O$_5$

Kavli Affiliate: Kristin Persson | First 5 Authors: Gopalakrishnan Sai Gautam, Pieremanuele Canepa, Rahul Malik, Miao Liu, Kristin Persson | Summary: A systematic first principles evaluation of the insertion behavior of multi-valent cations in orthorhombic V$_2$O$_5$ is performed. Layer spacing, voltage, phase stability, and ion mobility are computed for Li$^+$, Mg$^{2+}$, Zn$^{2+}$, Ca$^{2+}$, and Al$^{3+}$ […]


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Mechanisms of light harvesting by photosystem II in plants

Kavli Affiliate: Graham R. Fleming | First 5 Authors: Kapil Amarnath, Doran I. G. Bennett, Anna R. Schneider, Graham R. Fleming, | Summary: Light harvesting by photosystem II (PSII) in plants is highly efficient and acclimates to rapid changes in the intensity of sunlight. However, the mechanisms of PSII light harvesting have remained experimentally inaccessible. […]


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Symplectic geometry of unbiasedness and critical points of a potential

Kavli Affiliate: Alexey Bondal | First 5 Authors: Alexey Bondal, Ilya Zhdanovskiy, , , | Summary: The goal of these notes is to show that the classification problem of algebraically unbiased system of projectors has an interpretation in symplectic geometry. This leads us to a description of the moduli space of algebraically unbiased bases as […]


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