Ph.D. 1983, Columbia University
B.A. 1977, Cornell University
My research involves the development of novel instrumentation and
experiments for balloon-borne and satellite-borne missions to
investigate a variety of astrophysical problems.
Using a novel approach to fabricating X-ray optics pioneered at
Columbia, we built and calibrated the hard X-ray telescopes for the NASA
NuSTAR mission. NuSTAR is the first high energy astrophysics mission
to utilize focusing hard X-ray optics in the 10-80 keV energy band, and
this will provide 100 times better sensitivity than previous missions.
NuSTAR was launched in June 2012. My group is heavily involved in the
galactic plane survey. Our research includes studying objects near the
galactic center, including the supermassive black hole it contains;
studying the origin of the galactic diffuse X-ray background; studying
X-ray emission from molecular clouds and conducting a survey of a wide
swath near the galactic center to determine what types of objects it
contains. We are also studying non-thermal X-ray emission from
supernovae and pulsar wind nebulae, to better understand particle
transport and particle acceleration in these objects. We also study
radioactive 44Ti emission from young supernovae to challenge theories of
supernova explosion physics and explosive nucleosynthesis.
We are also involved in particle astrophysics, in particular a
balloon-borne experiment to hunt for dark matter. The General
Antiparticle Spectrometer Experiment (GAPS) will search for cosmic
antideuterons. Many beyond-the Standard-Model theories postulate weakly
interacting massive particles (WIMPS) that can annihilate in WIMP-WIMP
interactions in the galactic halo. The antideuterons are produced as a
rare byproduct of these annihilations, and potentially offer a smoking
gun signature of dark matter. In many beyond-the-Standard-Model
theories, antideuteron searches offer the most sensitive means to detect
dark matter. GAPS uses a novel scheme to detect antimatter through
identification of atomic deexcitation X-rays and particles produced when
antimatter is captured in an atom and subsequently annihilates in the
nucleus. GAPS requires the development of a novel pixellated Si(Li)
detector, and this development is currently underway at Columbia. A
prototype experiment was successfully flow from Hokkaido, Japan in June
2012, and we are working on the design of a major experiment to be flown
from Antarctica in late 2016.
T. Aramaki, S.K. Chan, C.J. Hailey, P.A. Kaplan, T. Krings, N. Madden,
D. Protic and C. Ross, “Development of large format Si(Li) detectors for
the GAPS dark matter experiment,” Nucl. Instr. Meth. (A), 682, 90-96,
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C. J. Hailey et. al., “Antideuteron-based dark matter search with GAPS:
Current progress and future prospects,” Advances in Space Research (in
J. Koglin, C.J. Hailey et. al., “First results from the ground
calibration of the NuSTAR flight optics,” Proc. SPIE vol. 8147, O’dell
and Pareschi eds., “Optics for EUV, X-ray and Gamma-ray Astronomy, 2011.
C.J. Hailey, H-J An, K.L. Blaedel, N.F. Brejnholt, F.E. Christensen,
W.W. Craig, T.A. Decker, M. Doll, J. Gum, J.E. Koglin, C.P. Jensen, L.
Hale, K. Mori, M.J. Pivovaroff, M. Sharpe, M. Stern, G. Tajiri and W.W.
Zhang, “The Nuclear Spectroscopic Telescope Array (NuSTAR): Optics
Overview and Current Status”, Proc. SPIE 7732, 28, 2010.
C.J. Hailey, “An Indirect Search for Dark Matter Using Antideuterons:
the GAPS Experiment”, New Journal of Physics, vol.11, 105022, 2009.
C.J. Hailey, T. Aramaki, W.W. Craig, F. Gahbauer, J.E. Koglin, L.
Fabris, N. Madden, K. Mori, H.T. Yu and K.P. Ziock, “Accelerator Testing
of the General Antiparticle Spectrometer, a Novel Approach to Indirect
Dark Matter Detection,” Journal of Cosmology and Astroparticle Physics,
JCAP01, 007, 2006