SULI - HEP - Kulp, James - 2.13.26

Galaxy clusters are the largest gravitationally bound structures in the Universe. Studying how their number changes with mass and redshift provides important information about cosmology. In order to obtain reliable results, however, it is essential to understand and quantify possible sources of bias that can affect cluster detection and mass measurements. At millimeter wavelengths (one of the most effective regimes for detecting galaxy clusters through the Sunyaev–Zel’dovich effect) a major source of contamination comes from radio-emitting galaxies associated with clusters. Radio sources can bias cluster mass estimates or, in some cases, make cluster detection more difficult.At Argonne National Laboratory, simulations of millimeter-wave sky emission have been developed, including contributions from galaxy clusters, radio sources, and the cosmic infrared background. The student will use these simulations to assess the impact of radio-source contamination in galaxy clusters and to understand how this effect depends on cluster properties.

Education and Experience Requirements

• The entirety of the appointment must be conducted within the United States.

 • Applicants must be:

•  Currently enrolled in undergraduate or graduate studies at an accredited institution.

• Graduated from an accredited institution within the past 3 months; or

• Actively enrolled in a graduate program at an accredited institution.

 • Must be 18 years or older at the time the appointment begins.

• Must possess a cumulative GPA of 3.0 on a 4.0 scale.

• Must be a U.S. citizen or Legal Permanent Resident at the time of application.

• If accepting an offer, must pass a screening drug test.

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EEO Information

As an equal employment opportunity employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a safe and welcoming workplace that fosters collaborative scientific discovery and innovation. Argonne encourages everyone to apply for employment. Argonne is committed to nondiscrimination and considers all qualified applicants for employment without regard to any characteristic protected by law.

Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department.