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PROJECTS: Quantum Foundations | Supernova Cosmology | Causality (Movies) | SN | GRBs | Multiverse
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    I am an astronomer, cosmologist, and data scientist, currently a NSF funded Assistant Research Scientist at the UC San Diego Center for Astrophysics & Space Sciences (CASS) and a Research Affiliate in the MIT STS Program. I work on several theoretical and observational projects to devise and implement fun experiments that leverage cosmology to test fundamental physics, including novel tests of quantum theory with astronomical observations as well as Infrared and Optical studies of Supernovae with ground and space based telescopes to measure the expansion history of the universe, cosmic acceleration, and dark energy. I enjoy exploring fascinating scientific questions at the intersection between observational astronomy, astrophysics, data analysis, and the philosophy of science through research, science writing, art, animation, public outreach, and science media engagement. For more, see my Bio, Resume, and CV.
Astronomy
NASA/ADS
(MITLib)
NASA ADS+
astro-ph
UCSD CASS
MIT Vera
MIT MKI
MIT CTP
Tufts/MIT Cosmo
AAS
NSF
NSF STS

Cosmic Bell
David Kaiser
Jason Gallicchio
Alan Guth
Brian Keating
Anton Zeilinger
IQOQI, Vienna

Harvard
Harvard CfA
Harvard Astro
Harvard PIN
Harvard Library
NSF GRFP
NASA GSRP
Andy's Cheat Sheets
NSF Essays
NASA GSRP Help Page
Shu Exam
Taxes
Grad Students/Advisors
Student/Faculty Photos

Supernova Cosmology
   My research background is primarily in observational astronomy and cosmology, specifically cosmological studies of supernova explosions, including Infrared observations of Type Ia Supernovae. This topic was the basis of my PhD thesis project with Professor Robert Kirshner in the Harvard University Department of Astronomy. Type Ia Supernovae can be used as standardizable candles for cosmology to measure the expansion history of the universe and constrain the mysterious dark energy thought to be causing the acceleration of cosmic expansion. The supernova aspect of my PhD thesis project used infrared data obtained with the fully robotic 1.3 meter Peters Automated Infrared Imaging Telescope (PAIRITEL) at the Fred Lawrence Whipple Observatory on Mount Hopkins, Arizona (P.I. Professor Joshua Bloom, UC Berkeley). See here for papers I have collaborated on including observations of other types of Supernovae. I am also currently a Co-Investigator on observational programs with the Hubble Space Telescope (PI R. Kirshner and collaborators) which observe Type Ia Supernovae at cosmological distances in the rest-frame near-infrared (RAISIN, Cycle 20, #13046, RAISIN2, Cycle 23, #14216).

Papers
CFAIR2: Near-Infrared Light Curves of 94 Type Ia Supernovae, Friedman, A.S. + 2015, The Astrophysical Journal Supplement Series, Vol. 220, Issue 1, id. 9, 35 pp. (arXiv:1408.0465) (DOI)

Infrared Light Curves of Type Ia Supernovae, Friedman, Andrew S., 2012, PhD Thesis, Harvard University, ProQuest Dissertations and Theses, Publication Number: AAT 3513964; ISBN: 9781267446190; Source: Dissertation Abstracts International, Volume: 73-11(E), Section: B.; 272 p. Advisor: Robert P. Kirshner, (NASA/ADS) (ProQuest)

CfA4: Light Curves for 94 Type Ia Supernovae, Hicken, M.+ 2012, The Astrophysical Journal Supplement, Vol. 200, Issue 2, article id. 12, 15 pp. (arXiv:1205.4493) (DOI)

Type Ia Supernova Light Curve Inference: Hierarchical Bayesian Analysis in the Near Infrared, Mandel, K.S., Wood-Vasey, W.M., Friedman, A.S., Kirshner, R.P., 2009, The Astrophysical Journal, Vol. 704, Issue 1, pp. 629-651, (arXiv:0908.0536) (DOI)

Type Ia Supernovae are Good Standard Candles in the Near Infrared: Evidence from PAIRITEL, Wood-Vasey, W.M., Friedman, A.S.+, 2008, The Astrophysical Journal, Vol. 689, Issue 1, pp. 377-390, (arXiv:0711.2068) (DOI)


Telescope Awards
NASA Hubble Space Telescope Award GO-14216: RAISIN2: Tracers of cosmic expansion with SN IA in the IR Co-I with PI Robert P. Kirshner, Harvard University Astronomy, Cycle 23, Phase II, 2015-2017

NASA Hubble Space Telescope Award GO-13046: RAISIN: Tracers of cosmic expansion with SN IA in the IR Co-I with PI Robert P. Kirshner, Harvard University Astronomy, Cycle 20, Phase II, 2012-2014

Peters Automated Infrared Imaging TELescope (PAIRITEL) at the Fred Lawrence Whipple Observatory on Mount Hopkins, Arizona, Co-I with PI Professor Joshua Bloom, UC Berkeley), Robert P. Kirshner, Harvard University Astronomy, 13 semesters 2005a-2013a, Awarded 300 hours each.

NASA Infrared Telescope Facility, Using NIR Spectra from Type Ia Supernovae to Constrain NIR, Co-I with PI G.H. Marion, Harvard/CfA (now UT Austin, McDonald Observatory).

NASA Swift Satellite, Investigation of the UV Properties of Supernovae with Swift, Cycle 4, Award#NNH07ZDA001N-SWIFT407, Co-I with PI Robert P. Kirshner, Harvard University Astronomy

Talks
Infrared Photometric Uncertainties with the PAIRITEL 1.3-m Telescope, Invited Talk, University of California, San Diego (UCSD), Center for Astrophysics and Space Sciences (CASS) (Jan 2, 2013)

CfAIR2: 100 Type Ia Supernovae Light Curves From PAIRITEL, Invited Talk, Special Astrophysics Seminar, University of California, San Diego (UCSD) Center for Astrophysics and Space Sciences (CASS) (Jun 19, 2012)

CfAIR2: Infrared Observations of ~100 Type Ia Supernovae With PAIRITEL, Invited Talk, Type Ia Supernovae in the Near Infrared, A PITT PACC workshop at the University of Pittsburgh Department of Physics and Astronomy (Mar 28, 2012)

CfAIR2: Infrared Observations of ~100 Type Ia Supernovae With PAIRITEL, Andrew Friedman Ph.D. Thesis Talk (Harvard/CfA Optical and Infrared Seminar), Harvard University Department of Astronomy, Phillips Auditorium, Harvard-Smithsonian Center for Astrophysics (Feb 22, 2012) [MOVIE]

Rescuing Type Ia Supernovae From Dust: Bayesian Inference With Near-Infrared and Optical Data, Philosophy of Cosmology Workshop / Logic, Mathematics, and Physics Graduate Conference (LMP): Topics in the Philosophy of Cosmology Panel, University of Western Ontario (May 7, 2011)

Infrared Light Curves of Type Ia Supernovae, AAS Meeting #215, Washington, DC, (Jan 5, 2010)

Infrared Light Curves of Type Ia Supernovae from PAIRITEL, Accretion and Explosion: The Astrophysics of Degenerate Stars, Kavli Institute for Theoretical Physics (KITP), UCSB, Santa Barbara, CA, (Feb 20, 2007) [Movie Online Here]

Selected PAIRITEL Data Analysis Issues, 2nd Annual PAIRITEL Workshop, Harvard-CfA, (May 16, 2006)

Posters
Disentangling Dust Extinction and Intrinsic Color Variation of Type Ia Supernovae With Near-Infrared and Optical Photometry, RogerFest: A Festival of Cosmic Explosions, Caltech Cahill Center, Pasadena, CA, (Aug 21-23, 2009)

Disentangling Dust Extinction and Intrinsic Color Variation of Type Ia Supernovae With Near-Infrared and Optical Photometry, Stellar Death & Supernovae, Kavli Inst. for Theoretical Physics (KITP), UCSB, Santa Barbara, CA, (Aug 17-21, 2009)

Disentangling Intrinsic Color Variation and Dust Extinction of Type Ia Supernovae With Near-Infrared, Optical, and Ultraviolet Photometry, AAS Meeting #213, Long Beach, CA (Jan 9-14, 2009)

Type Ia Supernovae are Good Standard Candles in the Near Infrared: Evidence from PAIRITEL, AAS Meeting #211, Austin, TX, (Jan 7-11, 2008)

The Absolute Brightness of Type Ia SNe in the NIR from PAIRITEL: Implications for the NASA/DOE Joint Dark Energy Mission 2nd GSRP Symposium, NASA Goddard Space Flight Center, Greenbelt, MD, (Sep 19-21, 2007)

Infrared Light Curves of Nearby Supernovae with the Peters Automated Infrared Imaging Telescope (PAIRITEL), Poster Presentation, AAS Meeting #207, Washington, DC, (January 8-12, 2006)

University of California, San Diego UCSD Center for Astrophysics & Space Sciences Massachusetts Institute of Technology MIT Center for Theoretical Physics Institute for Quantum Optics and Quantum Information, Vienna Harvard University Astronomy Harvard-Smithsonian Center for Astrophysics UC Berkeley Astronomy National Science Foundation National Aernautics & Space Administration
Last Updated: Andrew Samuel Friedman, 6/2017

University of California, San Diego, 9500 Gilman Drive
CASS, M/C 0424, SERF Bldg. 334, La Jolla, CA 92093-0424, USA (858) 534-5416


This material is based upon work supported by the National Science Foundation under NSF Award #1056580 (2012-2014) through an NSF Science, Technology, and Society Postdoctoral Fellowship at MIT and the NSF INSPIRE program via NSF Award #1541160 (2015-2018).

Original animations are shared under a
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 US License