DeepGhostBusters: Using Mask R-CNN to Detect and Mask Ghosting and Scattered-Light Artifacts from Optical Survey Images

Posted by klaurent Chicago

Kavli Affiliate: Brian Nord | First 5 Authors: Dimitrios Tanoglidis, Aleksandra Ćiprijanović, Alex Drlica-Wagner, Brian Nord, Michael H. L. S. Wang | Summary: Wide-field astronomical surveys are often affected by the presence of undesirable reflections (often known as "ghosting artifacts" or "ghosts") and scattered-light artifacts. The identification and mitigation of these artifacts is important for […]


Continue.. DeepGhostBusters: Using Mask R-CNN to Detect and Mask Ghosting and Scattered-Light Artifacts from Optical Survey Images

Subtle Data Crimes: Naively training machine learning algorithms could lead to overly-optimistic results

Posted by klaurent Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Efrat Shimron, Jonathan I. Tamir, Ke Wang, Michael Lustig, | Summary: While open databases are an important resource in the Deep Learning (DL) era, they are sometimes used "off-label": data published for one task are used for training algorithms for a different one. This work aims to […]


Continue.. Subtle Data Crimes: Naively training machine learning algorithms could lead to overly-optimistic results

Monte Carlo simulations of neutrino and charged lepton propagation in the Earth with nuPyProp

Posted by klaurent Chicago

Kavli Affiliate: Angela Olinto | First 5 Authors: Sameer Patel, Mary Hall Reno, Yosui Akaike, Luis Anchordoqui, Douglas Bergman | Summary: An accurate modeling of neutrino flux attenuation and the distribution of leptons they produce in transit through the Earth is an essential component to determine neutrino flux sensitivities of underground, sub-orbital and space-based detectors. […]


Continue.. Monte Carlo simulations of neutrino and charged lepton propagation in the Earth with nuPyProp

SNEWPY: A Data Pipeline from Supernova Simulations to Neutrino Signals

Posted by klaurent Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Amanda L. Baxter, Segev BenZvi, Joahan Castaneda Jaimes, Alexis Coleiro, Marta Colomer Molla | Summary: Current neutrino detectors will observe hundreds to thousands of neutrinos from a Galactic supernovae, and future detectors will increase this yield by an order of magnitude or more. With such a data […]


Continue.. SNEWPY: A Data Pipeline from Supernova Simulations to Neutrino Signals

End-to-End Partially Observable Visual Navigation in a Diverse Environment

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Bo Ai, Wei Gao, Vinay, David Hsu, | Summary: How can a robot navigate successfully in a rich and diverse environment, indoors or outdoors, along an office corridor or a trail in the park, on the flat ground, the staircase, or the elevator, etc.? To this end, […]


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Imaging reconfigurable molecular concentration on a graphene field-effect transistor

Posted by Berkeley

Kavli Affiliate: Michael F. Crommie | First 5 Authors: Franklin Liou, Hsin-Zon Tsai, Andrew S. Aikawa, Kyler C. Natividad, Eric Tang | Summary: The spatial arrangement of adsorbates deposited onto a clean surface in vacuum typically cannot be reversibly tuned. Here we use scanning tunneling microscopy to demonstrate that molecules deposited onto graphene field-effect transistors […]


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Deep exploration of the planets HR 8799 b, c, and d with moderate resolution spectroscopy

Posted by klaurent Stanford

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Jean-Baptiste Ruffio, Quinn M. Konopacky, Travis Barman, Bruce Macintosh, Kielan K. Wilcomb | Summary: The four directly imaged planets orbiting the star HR 8799 are an ideal laboratory to probe atmospheric physics and formation models. We present more than a decade’s worth of Keck/OSIRIS observations of these […]


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Further evidence of shocks in the first-overtone RR Lyrae pulsators: first detection of shock-triggered magnesium emissions

Posted by klaurent Peking

Kavli Affiliate: Huawei Zhang | First 5 Authors: Xiao-Wei Duan, Weijia Sun, Xiaodian Chen, Licai Deng, Huawei Zhang | Summary: The behavior of the shock wave in the atmosphere of the non-fundamental mode RR Lyrae pulsator remains a mystery. In this work, we firstly report a blueshifted Mg triplet emission in continuous spectroscopic observations for […]


Continue.. Further evidence of shocks in the first-overtone RR Lyrae pulsators: first detection of shock-triggered magnesium emissions

Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz

Posted by klaurent Peking

Kavli Affiliate: Subo Dong | First 5 Authors: Thomas W. -S. Holoien, Jack M. M. Neustadt, Patrick J. Vallely, Katie Auchettl, Jason T. Hinkle | Summary: We present observations of the extremely luminous but ambiguous nuclear transient (ANT) ASASSN-17jz, spanning roughly 1200 days of the object’s evolution. ASASSN-17jz was discovered by the All-Sky Automated Survey […]


Continue.. Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz