DROR, Jeff

About

Jeff Dror, Ph.D., obtained his doctorate from Cornell University in 2017 and is a faculty member in the Department of Physics at the University of Florida. His research group focuses on High Energy Theory within the Institute for Fundamental Theory. His research interests include understanding the evolution of the Universe through the detection of particles ejected during different epochs, such as cosmic fossils like microwave photons and light nuclei. He is particularly interested in detecting new cosmic fossils in the form of axions and gravitational waves. Dr. Dror's work involves proposing experimental searches to discover axions, which are hypothetical particles predicted by theories beyond the Standard Model and could constitute dark matter or dark radiation. Additionally, he studies gravitational waves produced by events in the early Universe, such as supermassive black hole mergers, cosmic phase transitions, and inflation, with a focus on detection in the nanohertz frequency regime using pulsar timing. His efforts include developing new methods to analyze pulsar light data to extend the sensitivity of gravitational wave detection efforts.

Research topics

• Astrophysics
• Physics
• Chemistry
• Optics
• Astronomy
• Molecular physics

Selected publications

• ALMA-IMF

  arXiv (Cornell University) · 2024 · 22 citations

  Context. The star formation process leads to an increased chemical complexity in the interstellar medium. Sites associated with high-mass star and cluster formation exhibit a so-called hot core phase, characterized by high temperatures and column densities of complex organic molecules. Aims. We aim to systematically search for and identify a sample of hot cores toward the 15 Galactic protoclusters of the ALMA-IMF Large Program and investigate their statistical properties. Methods. We built a com…

  PublisherDOI

• The physical and chemical structure of Sagittarius B2

  Astronomy and Astrophysics · 2022 · 19 citations

  Context. The giant molecular cloud Sagittarius B2 (hereafter SgrB2) is the most massive region with ongoing high-mass star formation in the Galaxy. Two ultra-compact H ii (UCHii ) regions were identified in SgrB2’s central hot cores, SgrB2(M) and SgrB2(N). Aims. Our aim is to characterize the properties of the H ii regions in the entire SgrB2 cloud. Comparing the H ii regions and the dust cores, we aim to depict the evolutionary stages of different parts of SgrB2. Methods. We use the Very Large…

  DOI

• ALMA-IMF

  Astronomy and Astrophysics · 2022 · 18 citations

  Context. Hot cores are signposts of the protostellar activity of dense cores in star-forming regions. W43-MM1 is a young region that is very rich in terms of high-mass star formation, which is highlighted by the presence of large numbers of high-mass cores and outflows. Aims. We aim to systematically identify the massive cores in W43-MM1 that contain a hot core and compare their molecular composition. Methods. We used Atacama Large Millimeter/sub-millimeter Array (ALMA) high-spatial resolution (…

  DOI

• Protostellar Cores in Sagittarius B2 N and M

  The Astrophysical Journal · 2024-01-01 · 9 citations

  articleOpen access

  Abstract We present 500 and 700 au resolution 1 and 3 mm Atacama Large Millimeter/submillimeter Array observations, respectively, of protostellar cores in protoclusters Sagittarius B2 (Sgr B2) North (N) and Main (M), parts of the most actively star-forming cloud in our Galaxy. Previous lower-resolution (5000 au) 3 mm observations of this region detected ∼150 sources inferred to be young stellar objects (YSOs) with M > 8 M ⊙ . With a 10-fold increase in resolution, we detect 371 sources at 3 m…

  PublisherOA PDFDOI

• JWST Reveals Widespread CO Ice and Gas Absorption in the Galactic Center Cloud G0.253+0.016

  The Astrophysical Journal · 2023-12-01 · 9 citations

  articleOpen access

  Abstract We report JWST NIRCam observations of G0.253+0.016, the molecular cloud in the Central Molecular Zone known as “The Brick,” with the F182M, F187N, F212N, F410M, F405N, and F466N filters. We catalog 56,146 stars detected in all six filters using the crowdsource package. Stars within and behind The Brick exhibit prodigious absorption in the F466N filter that is produced by a combination of CO ice and gas. In support of this conclusion, and as a general resource, we present models of CO ga…

  PublisherOA PDFDOI

Frequent coauthors

• Adam Ginsburg

  University of Florida

  18 shared

• Á. Sánchez-Monge

  Institute of Space Sciences

  17 shared

• Nazar Budaiev

  12 shared

• Fanyi Meng

  University of Chinese Academy of Sciences

  11 shared

• C. Goddi

  Osservatorio Astronomico di Cagliari

  10 shared

• A. Gusdorf

  9 shared

• P. Schilke

  8 shared

• Cara Battersby

  8 shared

Education

• Doctor of Philosophy, Astronomy

  University of Florida

  2025

• Master of Science, Astronomy

  University of Florida

  2022

• Bachelor of Science, Physics

  University of Houston

  2018

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