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| James M. Lattimer | |
|---|---|
| Name | James M. Lattimer |
| Birth date | 1950s |
| Birth place | United States |
| Fields | Astrophysics; Nuclear Physics |
| Workplaces | Stony Brook University; Brookhaven National Laboratory; State University of New York system |
| Alma mater | Princeton University; University of Pennsylvania |
| Doctoral advisor | David L. Chandler |
| Known for | Neutron star physics; Supernova nucleosynthesis; Neutrino emission |
| Awards | Helen B. Warner Prize for Astronomy; Eddington Medal |
James M. Lattimer is an American theoretical astrophysicist and nuclear physicist known for work on the physics of neutron stars, supernovae, and compact-object mergers. He has combined models from nuclear physics with observations from astronomy to interpret signals from supernovae, gamma-ray bursts, and gravitational waves. His research links laboratory measurements of nuclear matter with astrophysical phenomena detected by observatories and collaborations such as LIGO, VIRGO, and IceCube.
Lattimer was born in the United States and pursued undergraduate studies at Princeton University, where he studied physics and developed interests in nuclear physics and astrophysics. He completed graduate work at the University of Pennsylvania under advisors experienced in theoretical astrophysics and computational modeling, engaging with communities associated with Lawrence Berkeley National Laboratory and Brookhaven National Laboratory. During his doctoral training he collaborated with researchers connected to projects like Super-Kamiokande and interacted with faculty from institutions including Columbia University and Yale University.
Lattimer joined the faculty of Stony Brook University and held joint appointments that connected him to research groups at Brookhaven National Laboratory and the State University of New York system. He supervised graduate students and postdoctoral researchers who later held positions at centers such as Caltech, MIT, Harvard University, and University of California, Berkeley. Lattimer served on committees for funding agencies like the National Science Foundation and panels linked with the Department of Energy and international collaborations involving European Southern Observatory partners. He contributed to workshops organized by NASA and participated in international conferences hosted by institutions like Max Planck Society and Institute for Advanced Study.
Lattimer developed theoretical models connecting the equation of state of dense matter to observable properties of compact objects such as neutron star radii and masses, building on frameworks used by researchers at Oak Ridge National Laboratory and Los Alamos National Laboratory. He investigated the role of neutrino emission in core-collapse supernova evolution, linking calculations with detections from neutrino observatories such as Super-Kamiokande and IceCube. His work on nucleosynthesis explored pathways for the rapid neutron-capture process (r-process) in environments including neutron star merger ejecta and magnetorotational supernovae, engaging with models discussed at CERN and by collaborations involved with LIGO and VIRGO when interpreting electromagnetic counterparts like kilonova transients.
Lattimer coauthored influential papers on mass-radius relationships for compact stars that informed interpretations of observations from NICER aboard the International Space Station and timing results from radio pulsar observations at facilities such as the Arecibo Observatory and the Green Bank Telescope. He explored the impact of exotic phases of matter—hyperons, deconfined quarks, and condensates—drawing connections to theoretical approaches developed at Princeton Plasma Physics Laboratory and research on dense-matter constraints from heavy-ion collisions at Relativistic Heavy Ion Collider.
His analyses of gravitational-wave signals from binary mergers contributed to the extraction of tidal deformability parameters used by the LIGO Scientific Collaboration and the Virgo Collaboration to constrain dense-matter physics. Lattimer’s interdisciplinary approach tied laboratory nuclear experiments—such as those at Facility for Rare Isotope Beams—to astrophysical observables, fostering collaborations with theorists and experimentalists from RIKEN and TRIUMF.
Lattimer’s research has been recognized by awards including the Helen B. Warner Prize for Astronomy and the Eddington Medal for contributions to theoretical astrophysics. He has been invited to deliver named lectures at institutions such as Cambridge University, Columbia University, and University of Chicago. Professional service includes election to leadership roles in organizations like the American Physical Society and participation in advisory boards for observatories such as Chandra X-ray Observatory and missions under NASA astrophysics programs. He received fellowships and visiting positions at centers including the Kavli Institute for Theoretical Physics and the Institute for Advanced Study.
Colleagues describe Lattimer as a mentor who bridged communities spanning nuclear physics laboratories, astrophysical observatories, and gravitational-wave collaborations. His students and collaborators have joined faculty and research staff at institutions including Stanford University, Rutgers University, and University of Illinois Urbana-Champaign. Lattimer’s work continues to influence interpretation of multimessenger observations, guiding analyses by groups associated with LIGO, VIRGO, KAGRA, and electromagnetic follow-up networks involving facilities like the Hubble Space Telescope and the Very Large Telescope. His legacy is reflected in the sustained integration of nuclear experimental constraints with astrophysical modeling, shaping current efforts to understand dense matter, compact-object mergers, and the astrophysical origin of heavy elements.
Category:American astrophysicists Category:American nuclear physicists