For NYSS APS information, contact:
Dr. Erica Simoson 

"Cosmic Background Infrared ExpeRiment 2:
Probing Structure Formation with Near-Infrared Fluctuations"

Chi Nguyen, RIT

The extragalactic background light (EBL) in the near-infrared is the integrated emission from all objects outside of the Milky Way. Imprinted by the history of stellar emission, the EBL traces light back to the birth of the first stars during the Epoch of Reionization and places tight constraints on star formation models. Characterizing the EBL by the absolute count of photons has been historically difficult due to the presence of local foreground emission. A successful new technique is to map the variations from the mean intensity (“fluctuations”) of the observed emission on different spatial scales and at various wavelengths. The fluctuations can then be decomposed spectrally and spatially to probe the underlying faint EBL emission. Recent work from Spitzer and the first Cosmic Infrared Background ExpeRiment (CIBER-1), among others, show that the EBL fluctuations exceed the contribution from known galaxy populations. Built on the success of CIBER-1, CIBER-2 aims to identify the sources of the EBL fluctuations by tracing their spectral signatures from the optical to near infrared. The experiment uses a 28.5-cm telescope capable of obtaining images in six wavebands covering 0.5-2.5 microns, and will be launched four times on a NASA sounding rocket with the first flight projected in 2018. In this talk, I will present the current status of the CIBER-2 payload integration and how its design addresses the scientific questions found in CIBER-1, as
well as outline the plan for future CIBER-2 data analysis.

For program, contact:  
Dr. Heather Watson – watsonh@union.edu
Dr. Nelia Mann – mannn@union.edu
Dr. Samuel Amanuel – amanuels@union.edu
Ms. Lynnette Stec – stecl@union.edu
Phone: 518-388-6254
Fax: 518-388-6947
Department of Physics & Astronomy, Union College, Schenectady, NY 12308