# Jonathan E. Grindlay Robert Treat Paine Professor of Practical Astronomy, Emeritus ![grindlay_j.jpg](/sites/g/files/omnuum6286/files/styles/hwp_4_5__480x600/public/astronomy/files/grindlay_j.jpg?itok=8oU4m1Ye) smartphone [(617) 495-7204]() email laptop\_windows [DASCH Project](http://dasch.rc.fas.harvard.edu/index.php) Center for Astrophysics | Harvard & Smithsonian 60 Garden Street, MS-06 Cambridge, MA 02138 Office B-420 *Research Interests:* *High Energy Astrophysics:* Studies of accretion onto compact objects (black holes, neutron stars and white dwarfs). Development of detectors and telescopes for wide-field imaging surveys of black holes discovered in soft-to-hard X-rays. *Time Domain Astrophysics:* X-ray/optical/IR studies of Transients and variability of black holes in binaries and galactic nuclei to probe extreme physics phenomena and constrain black hole populations. Days-to-Century optical variability studies of stars and quasars with *DASCH* and followup spectroscopy to constrain formation and evolution of black holes. *Publications:* [ADS](http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?sim_query=YES&aut_xct=NO&aut_logic=OR&obj_logic=OR&author=GRINDLAY,%20J.__&nr_to_return=50&start_nr=1&query_type=PAPERS&select_nr=50&select_start=1&jou_pick=ALL&data_and=ALL&group_and=ALL&sort=SCORE&aut_syn=YES&aut_wt=1.0&aut_wgt=YES&db_key=AST&version=1&version=1&db_key=AST), [astro-ph](http://arxiv.org/find/astro-ph/1/au:%20grindlay/0/1/0/all/0/1)