Amir Siraj studies astrophysics at Harvard University (Class of 2022, Leverett House), and is interested broadly in theoretical astrophysics. Siraj is a Goldwater Scholar and U.S. Presidential Scholar, and he has received the Thomas T. Hoopes PrizeLeo Goldberg Prize (Senior & Junior), Origins of Life Summer Undergraduate Research Prize Award, Mirzakhani Scholarship, Harvard College Scholarship, and the Harvard College Research Program Grant. He is co-president of Harvard Students for the Exploration and Development of Space and former Senior U.S. Editor of the Harvard Political Review. His research advisor is Professor Abraham Loeb.

Siraj is concurrently pursuing a Master's degree at the New England Conservatory of Music, studying under the guidance of Professor Wha Kyung Byun. Siraj is a classical pianist who has appeared as a guest soloist with orchestras including the Boston Symphony and the Boston Pops, and has performed for luminaries such as Moon Jae-in and Justin Trudeau. He is a current Steinway Young Artist and an alum of the Lang Lang International Music Foundation Young Scholars Program. Siraj serves as Assistant Music Director of the Hasty Pudding Theatricals, the oldest theater group in the United States, and is a member of the Harvard Krokodiloes, Harvard University's oldest a cappella group.

Publications (ADS, arXiv)

19. Siraj, A., & Loeb, A. "Transfer of Life Between Earth and Venus with Planet-Grazing Asteroids," submitted for publication. [arXiv:2009.09512]
18. Siraj, A., & Loeb, A. "The Case for an Early Solar Binary Companion," ApJL (2020)[arXiv:2007.10339]
17. Siraj, A., & Loeb, A. "Risks for Life on Proxima b from Sterilizing Asteroid Impacts," submitted to PSJ. [arXiv:2006.12503]
16. Siraj, A., & Loeb, A. "Searching for Black Holes in the Outer Solar System with LSST," ApJL (2020). [arXiv:2005.12280] 
15. Siraj, A., & Loeb, A. "Impacts of Dust Grains Accelerated by Supernovae on the Moon," ApJL (2020). [arXiv:2004.11379]
14. Siraj, A., & Loeb, A. "Repeated Impact-Driven Plume Formation On Enceladus Over Myr Timescales," submitted for publication. [arXiv:2003.07866]
13. Siraj, A., & Loeb, A. "Detecting Interstellar Objects through Stellar Occultations," ApJL (2020). [arXiv:2001.02681]
12. Siraj, A., & Loeb, A. "Observational Signatures of Sub-Relativistic Meteors," submitted for publication. [arXiv:2002.01476]
11. Siraj, A., & Loeb, A. "Possible Transfer of Life by Earth-Grazing Objects to Exoplanetary Systems," Life (2020). [arXiv:2001.02235]
10. Siraj, A., & Loeb, A. "Exporting Terrestrial Life Out of the Solar System with Gravitational Slingshots..." IAJ (2020). [arXiv:1910.06414]
9. Siraj, A., & Loeb, A. "An Argument for a Kilometer-scale Nucleus of C/2019 Q4," RNAAS (2019). [arXiv:1909.07286]
8. Siraj, A., & Loeb, A. "Radio Flares from Collisions of Neutron Stars with Interstellar Asteroids," RNAAS (2019). [arXiv:1908.11440]
7. Siraj, A., & Loeb, A. "A Real-Time Search for Interstellar Impacts on the Moon," Acta Astronautica (2020). [arXiv:1908.08543]
6. Siraj, A., & Loeb, A. "Halo Meteors," submitted to New Astronomy. [arXiv:1906.05291]
5. Siraj, A., & Loeb, A. "Probing Extrasolar Planetary Systems with Interstellar Meteors," submitted to ApJL. [arXiv:1906.03270]
4. Siraj, A., & Loeb, A. "Discovery of a Meteor of Interstellar Origin," submitted to ApJL. [arXiv:1904.07224]
3. Siraj, A., & Loeb, A. "Identifying Interstellar Objects Trapped in the Solar System through Their Orbital Parameters," ApJL (2019). [arXiv:1811.09632]
2. Siraj, A., & Loeb, A. "Oumuamua's Geometry Could Be More Extreme than Previously Inferred," RNAAS (2019).
1. Hora, J. L., Siraj, A., Mommert, M., et al. "Infrared Light Curves of Near-Earth Objects," ApJ Supplement Series (2018). [arXiv:1808.07873]

In The News

Earth life may have traveled to Venus, Space.com (September 24, 2020)

Is There a Black Hole in Our Backyard?The New York Times (September 11, 2020)

Far-out Findings from the Cosmos, Harvard Gazette (September 4, 2020)

The Sun's Long-Lost TwinFox News (September 1, 2020)

A Solar Binary, the Oort Cloud, and Planet Nine, Cosmos (August 20, 2020)

The Sun Might Have Had a Binary Companion StarUniverse Today (August 19, 2020)

Amir Siraj on Times Radio with John PienaarTimes Radio (August 19, 2020)

A Long-Lost Solar Twin?, Gizmodo (August 18, 2020)

A Companion to the Sun, Futurism (August 18, 2020)

Was Our Sun a Twin?, Forbes (August 18, 2020)

The Sun's Binary CompanionCfA Press Release (August 18, 2020)

Advocacy for National Parks Through New Music Project, New England Conservatory (August 6, 2020)

The Musical Inspiration of National ParksNational Park Foundation (August 4, 2020)

Planet Nine: Black Hole or Planet?, Astronomy Magazine (July 15, 2020)

How to Find Out if Planet Nine is a Black Hole, ScienceAlert (July 13, 2020)

A New Telescope Could Find Primordial Black Holes, New Atlas (July 12, 2020)

A Grapefruit-Sized Black Hole?, BGR (July 12, 2020)

Searching for Dark Matter in the Solar SystemForbes (July 11, 2020)

LSST Could Probe Primordial Black HolesSpace.com (July 11, 2020)

A Plan to Detect a Black Hole, Gizmodo (July 10, 2020)

The Nature of Planet Nine, Futurism (July 10, 2020)

Detecting Flares from a Planet Nine Black HoleUniverse Today (July 10, 2020)

A Search for a Primordial Black Hole, Phys.org (July 10, 2020)

Is Planet Nine a Primordial Black Hole?CfA Press Release (July 9, 2020)

Risks for Life from AsteroidsForbes (June 30, 2020)

Five Beautiful Online Piano Recitals, Pianist Magazine (June 22, 2020)

Testing the Planet Nine Black Hole HypothesisForbes (June 3, 2020)

Top ArXiv Papers of the Weekby Sunny Vagnozzi (May 29, 2020)

Siraj Awarded Hoopes and Goldberg Prizes, Harvard Astronomy Department (May 22, 2020)

2020 Hoopes Prizes Awarded, Harvard Crimson (May 15, 2020)

Impact of Fast Supernova Dust on the Moon, Popular Science (April 30, 2020) 

Meteors Near the Speed of LightUniverse Today (February 28, 2020)

Interstellar Panspermia, Astronomy.com (February 21, 2020)

Man of The Year Gets a Musical Tour, Harvard Gazette (February 7, 2020)

Exporting Terrestrial Life, Eos (January 22, 2020)

Comets & Interstellar Objects Could Help Transfer LifeUniverse Today (October 19, 2019)

Life Escaping the Solar System, Scientific American (November 4, 2019)

Interstellar Comet Borisov, Space.com (September 20, 2019)

The Moon as a Fishing Net, Scientific American (September 8, 2019)

An Interstellar Observatory in Lunar Orbit, Space.com (August 30, 2019)

Detecting Interstellar Meteoroids on the MoonUniverse Today (August 28, 2019)

It Takes a Village to Declassify an Error BarScientific American (July 3, 2019)

What Can We Learn From a Seashell, Cosmos (June 22, 2019)

`Oumuamua's CousinScientific American (May 6, 2019)

Harvard Undergrad & Professor Identify First Interstellar Meteor, Harvard Crimson (April 30, 2019)

`Oumuamua Might Not Be First Interstellar Visitor, NBC News (April 24, 2019)

Meteor From Another Solar System, CNN (April 17, 2019)

Interstellar Meteor, Fox News (April 17, 2019)

2014 Interstellar MeteorSmithsonian (April 17, 2019)

Interstellar Fireball, National Geographic (April 16, 2019)

First Known Interstellar Meteor, Space.com (April 16, 2019)

First Interstellar Meteor, Newsweek (April 16, 2019)

Kicks off Second Junior Cliburn, My Sweet Charity (January 10, 2019)

`Oumuamua One Of Many Interstellar Visitors, CNET (December 7, 2018)

Potential Interstellar Objects in the Solar SystemForbes (November 30, 2018)

Trapped Interstellar Asteroids and Comets in the Solar System, Universe Today (November 29, 2018)

Harvard Presidential InaugurationHarvard Magazine (October 5, 2018)

A Need For Regulation in Space, Harvard Political Review (January 9, 2018)

Planetary Protection, Harvard Political Review (November 21, 2017)

Reforming U.S. Space Law, Harvard Political Review (September 28, 2018)

Atlantic Council Awards, Atlantic Council (September 7, 2017)

Young Immigrant Musicians Reinvent a Classic, NPR (July 3, 2017)

Presidential Scholar, Boston 25 News (May 11, 2017)

Named U.S. Presidential Scholar, Patch (May 5, 2017)

Siraj & O'Riley, NPR (April 24, 2017)

Performs on National Radio, Brookline TAB (March 7, 2017)

Organizes Benefit Concert, Boston Globe (January 26, 2016)

Reaches Out Through Music, Boston Globe (January 21, 2016)

Selected for the Cliburn, Boston Globe (March 30, 2015)