NASA Einstein Fellow

May 31, 2024 | academic.oup.com | Carnegie Mellon |NASA Einstein Fellow

Fitting model spectral energy distributions (SED) to galaxy photometric data is a widely used method to recover galaxy parameters from galaxy surveys. However, the parameter space used to describe galaxies is wide and interdependent, and distinctions between real and spurious correlations that are found between these parameters can be difficult to discern.

Apr 5, 2024 | academic.oup.com | Space Research |NASA Einstein Fellow

Large-amplitude accretion outbursts in young stars are expected to play a central role in proto-stellar assembly. Outburst identification historically has taken place using optical techniques, but recent, systematic infrared searches are enabling their discovery in heavily dust-obscured regions of the Galactic plane. Here, we present the discovery of WTP 10aaauow, a large-amplitude mid-infrared (MIR) outburst identified in a systematic search of NEOWISE data using new image subtraction techniques.

Feb 23, 2024 | academic.oup.com | East Lansing |Middlebury College |NASA Einstein Fellow

Ultraluminous X-ray sources (ULXs) are off-nuclear objects with X-ray luminosities exceeding the nominal Eddington limit of 1039 erg s−1 for an black hole (BH). The complex and unique ULX XMMU 122939.7+075733, hereafter RZ 2109, is located in an extragalactic globular cluster (GC) associated with the Virgo elliptical galaxy NGC 4472 (D = 16.8 Mpc). RZ 2109 is the first ever BH candidate in a GC (Maccarone et al.

Nov 2, 2023 | academic.oup.com | Space Research |NASA Einstein Fellow

Mechanism giving rise to radio emission from pulsars is still not fully understood (e.g. Beskin 2018; Mitra 2017; Cerutti & Beloborodov 2016). Observational properties of pulsars provide clues about the origin of the radio emission. While folded profile gives information about the average emission pattern across the radio beam, single pulse phenomena like drifting, nulling, and mode changing provide insight into the exact process of emission.

May 31, 2023 | academic.oup.com | Space Research |NASA Einstein Fellow

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