The Stellar Initial Mass Function and Population Properties of M89 from Optical and NIR Spectroscopy: Addressing Biases in Spectral Index Analysis

Posted by Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Ilaria Lonoce, Anja Feldmeier-Krause, Wendy L. Freedman, , | Summary: The complexity of constraining the stellar initial mass function (IMF) in early-type galaxies cannot be overstated, given the necessity of both very high signal-to-noise (S/N) data and the difficulty of breaking the strong degeneracies that occur […]


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A shock near the virial radius of the Perseus Cluster

Posted by klaurent Stanford

Kavli Affiliate: Steven W. Allen | First 5 Authors: Zhenlin Zhu, Aurora Simionescu, Hiroki Akamatsu, Xiaoyuan Zhang, Jelle S. Kaastra | Summary: Previous X-ray studies of the Perseus Cluster, consisting of 85 Suzaku pointings along eight azimuthal directions, revealed a particularly steep decrease in the projected temperature profile near the virial radius (~r200) towards the […]


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To investigate the magnetic-field-induced distortion of NSs through GRB X-ray plateaus

Posted by klaurent Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Tingting Lin, Shuang Du, Renxin Xu, , | Summary: Magnetic field may distort neutron stars (NSs), but the effect has not been robustly tested through gravitational-wave observation yet due to the absence of a fast rotating Galactic magnetar. The central objects of Gamma-ray bursts (GRBs) could be […]


Continue.. To investigate the magnetic-field-induced distortion of NSs through GRB X-ray plateaus

Investigating magnetically-induced distortions of neutron stars through gamma-ray burst X-ray plateaus

Posted by klaurent Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Tingting Lin, Shuang Du, Weihua Wang, Shujin Hou, Renxin Xu | Summary: Magnetic field may distort neutron stars (NSs), but its effect has not been robustly tested through gravitational-wave observation yet due to the absence of a fast rotating Galactic magnetar. Part of gamma-ray bursts (GRBs) are […]


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Lattice Renormalization of Quantum Simulations

Posted by klaurent Chicago

Kavli Affiliate: Marcela Carena | First 5 Authors: Marcela Carena, Henry Lamm, Ying-Ying Li, Wanqiang Liu, | Summary: With advances in quantum computing, new opportunities arise to tackle challenging calculations in quantum field theory. We show that trotterized time-evolution operators can be related by analytic continuation to the Euclidean transfer matrix on an anisotropic lattice. […]


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Neutrino constraints on long-lived heavy dark sector particle decays in the Earth

Posted by klaurent Chicago

Kavli Affiliate: Angela V. Olinto | First 5 Authors: Mary Hall Reno, Luis A. Anchordoqui, Atri Bhattacharya, Austin Cummings, Johannes Eser | Summary: Recent theoretical work has explored dark matter accumulation in the Earth and its drift towards the center of the Earth that, for the current age of the Earth, does not necessarily result […]


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Constraining particle acceleration in Sgr A* with simultaneous GRAVITY, Spitzer, NuSTAR and Chandra observations

Posted by klaurent Stanford

Kavli Affiliate: R. Morris | First 5 Authors: R. Abuter, A. Amorim, M. Bauböck, F. Baganoff, J. P. Berge | Summary: We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the $M$-, $K$-, and $H$-bands in the mid- and near-infrared and in […]


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The three-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey

Posted by Tokyo

Kavli Affiliate: Masahiro Takada | First 5 Authors: Xiangchong Li, Hironao Miyatake, Wentao Luo, Surhud More, Masamune Oguri | Summary: We present the galaxy shear catalog that will be used for the three-year cosmological weak gravitational lensing analyses using data from the Wide layer of the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) Survey. The […]


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A long-period substellar object exhibiting a single transit in Kepler

Posted by klaurent MIT

Kavli Affiliate: Saul Rappaport | First 5 Authors: Samuel N. Quinn, Saul Rappaport, Andrew Vanderburg, Jason D. Eastman, Lorne A. Nelson | Summary: We report the detection of a single transit-like signal in the Kepler data of the slightly evolved F star KIC4918810. The transit duration is ~45 hours, and while the orbital period ($Psim10$ […]


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The Hough Stream Spotter: A New Method for Detecting Linear Structure in Resolved Stars and Application to the Stellar Halo of M31

Posted by klaurent Stanford

Kavli Affiliate: Susan E. Clark | First 5 Authors: Sarah Pearson, Susan E. Clark, Alexis J. Demirjian, Kathryn V. Johnston, Melissa K. Ness | Summary: Stellar streams from globular clusters (GCs) offer constraints on the nature of dark matter and have been used to explore the dark matter halo structure and substructure of our Galaxy. […]


Continue.. The Hough Stream Spotter: A New Method for Detecting Linear Structure in Resolved Stars and Application to the Stellar Halo of M31