Search Results for author: Scott Chapman

Found 6 papers, 2 papers with code

Divide and Ensemble: Progressively Learning for the Unknown

no code implementations9 Oct 2023 Hu Zhang, Xin Shen, Heming Du, Huiqiang Chen, Chen Liu, Hongwei Sheng, Qingzheng Xu, MD Wahiduzzaman Khan, Qingtao Yu, Tianqing Zhu, Scott Chapman, Zi Huang, Xin Yu

In the wheat nutrient deficiencies classification challenge, we present the DividE and EnseMble (DEEM) method for progressive test data predictions.

Is there enough star formation in simulated protoclusters?

no code implementations5 Oct 2020 SeungHwan Lim, Ryley Hill, Douglas Scott, Arif Babul, David Barnes, Scott Chapman, Christopher Hayward, Scott Kay, Ian McCarthy, Douglas Rennehan, Mark Vogelsberger

Using a combination of state-of-the-art hydrodynamical simulations and empirical models, we show that current galaxy-formation models do not produce enough star formation in protoclusters to match observations.

Astrophysics of Galaxies

A Twist on Broken U(3)xU(3) Supersymmetry

no code implementations11 Nov 2019 Scott Chapman

After spontaneous gauge symmetry breaking to SU(3)xSU(2)xU(1), the theory reproduces the main features of the Standard Model for two families of quarks and leptons, with gauginos playing the role of left-handed quarks and sleptons playing the role of the Higgs boson.

High Energy Physics - Phenomenology High Energy Physics - Theory

Two sub-millimetre bright protoclusters bounding the epoch of peak star formation activity

1 code implementation18 Sep 2018 Kevin Lacaille, Scott Chapman, Ian Smail, Charles Steidel, Andrew Blain, James Geach, Anneya Golob, Mark Gurwell, Rob Ivison, Naveen Reddy, Marcin Sawicki

We present James Clerk Maxwell Telescope (JCMT) Submillimetre Common-User Bolometer Array 2 (SCUBA-2) 850 \& 450 $\mu$m observations ($\sigma_{850}\sim0. 5$ mJy, $\sigma_{450}\sim5$ mJy) of the HS1549+19 and HS1700+64 survey fields containing two of the largest known galaxy over-densities at $z=2. 85$ and $2. 30$, respectively.

Astrophysics of Galaxies

The JCMT Transient Survey: Data Reduction and Calibration Methods

1 code implementation6 Jun 2017 Steve Mairs, James Lane, Doug Johnstone, Helen Kirk, Kevin Lacaille, Geoffrey C. Bower, Graham S. Bell, Sarah Graves, Scott Chapman, The JCMT Transient Survey Team

We use the SCUBA-2 instrument to simultaneously observe these regions at wavelengths of 450 $\mu$m and 850 $\mu$m.

Instrumentation and Methods for Astrophysics

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