Center for Particle and Gravitational Astrophysics

  • United States

Organization profile

Organization profile

Research Interests

Fingerprint The fingerprint is based on mining the text of the scientific documents related to the associated persons. Based on that an index of weighted terms is created, which defines the key subjects of research unit

gamma ray bursts Physics & Astronomy
x rays Physics & Astronomy
gravitational waves Physics & Astronomy
neutrinos Physics & Astronomy
cosmic rays Physics & Astronomy
galaxies Physics & Astronomy
energy Physics & Astronomy
detectors Physics & Astronomy

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Profiles

No photo of Chad Richard Hanna

Chad Richard Hanna, PhD

Person: Academic

20052018

Research Output 1974 2019

Broad Absorption Line Disappearance/Emergence in Multiple Ions in a Weak Emission-line Quasar

Yi, W., Vivek, M., Brandt, W. N., Wang, T., Timlin, J., Ak, N. F., Schneider, D. P., Fynbo, J. P. U., Ni, Q., Vito, F., Indahl, B. L. & Sameer, Jan 10 2019, In : Astrophysical Journal Letters. 870, 2, L25.

Research output: Contribution to journalArticle

quasars
ion
ions
outflow
light curve

Changing-look Quasar Candidates: First Results from Follow-up Spectroscopy of Highly Optically Variable Quasars

Macleod, C. L., Green, P. J., Anderson, S. F., Bruce, A., Eracleous, M., Graham, M., Homan, D., Lawrence, A., Lebleu, A., Ross, N. P., Ruan, J. J., Runnoe, J., Stern, D., Burgett, W., Chambers, K. C., Kaiser, N., Magnier, E. & Metcalfe, N., Mar 20 2019, In : Astrophysical Journal. 874, 1, 8.

Research output: Contribution to journalArticle

quasars
spectroscopy
active galactic nuclei
footprint
signal-to-noise ratio

Developing a silica aerogel radiator for the HELIX ring-imaging Cherenkov system

Tabata, M., Allison, P., Beatty, J. J., Coutu, S., Gebhard, M., Green, N., Hanna, D., Kunkler, B., Lang, M., McBride, K., Mognet, S. I., Müller, D., Musser, J., Nutter, S., Park, N., Schubnell, M., Tarlé, G., Tomasch, A., Visser, G., Wakely, S. P. & 1 othersWisher, I., Jan 1 2019, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

Research output: Contribution to journalArticle

Aerogels
aerogels
tiles
Radiators
radiators

Direct Measurement of Quasar Outflow Wind Acceleration

Misawa, T., Eracleous, M., Charlton, J. C. & Kashikawa, N., Jan 10 2019, In : Astrophysical Journal. 870, 2, 68.

Research output: Contribution to journalArticle

quasars
outflow
shift
deceleration
profiles

Emission Signatures from Sub-parsec Binary Supermassive Black Holes. II. Effect of Accretion Disk Wind on Broad Emission Lines

Nguyen, K., Bogdanović, T., Runnoe, J. C., Eracleous, M., Sigurdsson, S. & Boroson, T., Jan 1 2019, In : Astrophysical Journal. 870, 1, 16.

Research output: Contribution to journalArticle

accretion disks
accretion
signatures
profiles
eccentricity

Energetics of high-energy cosmic radiations

Murase, K. & Fukugita, M., Mar 15 2019, In : Physical Review D. 99, 6, 063012.

Research output: Contribution to journalArticle

cosmic rays
neutrinos
gamma rays
energy
rays

High-energy Emission from Interacting Supernovae: New Constraints on Cosmic-Ray Acceleration in Dense Circumstellar Environments

Murase, K., Franckowiak, A., Maeda, K., Margutti, R. & Beacom, J. F., Mar 20 2019, In : Astrophysical Journal. 874, 1, 80.

Research output: Contribution to journalArticle

cosmic ray
supernovae
cosmic rays
neutrinos
shock

High-speed ejecta from the gamma-ray binary PSR B1259–63/LS 2883

Pavlov, G., Hare, J. & Kargaltsev, O., Jan 1 2019, In : Rendiconti Lincei.

Research output: Contribution to journalArticle

Gamma Rays
ejecta
gamma radiation
X-radiation
X-Rays

Hubble Space Telescope Nondetection of PSR J2144-3933: The Coldest Known Neutron Star

Guillot, S., Pavlov, G., Reyes, C., Reisenegger, A., Rodriguez, L. E., Rangelov, B. & Kargaltsev, O., Apr 1 2019, In : Astrophysical Journal. 874, 2, 175.

Research output: Contribution to journalArticle

cold neutrons
Hubble Space Telescope
pulsars
neutron stars
heating

Inflation driven by scalar field and solid matter

Meszaros, P. I., Mar 1 2019, In : International Journal of Modern Physics D. 28, 4, 1950072.

Research output: Contribution to journalArticle

inflation
Inflation
Scalar Field
scalars
Tensor