Manisha Pranati Caleb is an Indian and Australian astrophysicist whose research has used interferometry to detect fast radio bursts,[1] studied the local context of fast radio bursts, used their signals as probes into the distribution of matter in the universe,[2] and discovered repeating signals from what may be very slowly-rotating neutron stars.[3][4][5] She is a lecturer at the University of Sydney, in the Sydney Institute for Astronomy.[2]
Education and career
editCaleb was a student at Stella Maris College, Chennai in India from 2007 to 2010. She went to University College London in England for a master's degree involving spacecraft and satellite communications. Next, she became a doctoral student at the Australian National University, where she began her work on fast radio bursts.[1][5] Her 2017 doctoral dissertation, A pursuit of fast radio transients with the UTMOST and Parkes radio telescopes, was jointly supervised by Frank Briggs, Brian Schmidt, Matthew Bailes, and Chris Flynn.[6]
She became a postdoctoral researcher at the University of Manchester in England[1] before returning to Australia for her present position as a lecturer in the Sydney Institute for Astronomy of the University of Sydney.[2]
Research
editSome of Caleb's major results include the first use of interferometry to detect fast radio bursts, in 2017,[1][B] confirmation of the extra-galactic origin of these bursts,[7][A] and the discoveries of ultra-long-period pulsars PSR J0901–4046 in 2020, the former slowest known pulsar at roughly 76 seconds per pulse,[3][C] and ASKAP J1935 2148 in 2024, with roughly 54 minutes per pulse.[4][5][D]
Selected publications
edit| A. | Caleb, M.; Flynn, C.; Bailes, M.; Barr, E. D.; Hunstead, R. W.; Keane, E. F.; Ravi, V.; van Straten, W. (March 2016), "Are the distributions of fast radio burst properties consistent with a cosmological population?", Monthly Notices of the Royal Astronomical Society, 458 (1): 708–717, arXiv:1512.02738, doi:10.1093/mnras/stw175
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| B. | Caleb, M.; Flynn, C.; Bailes, M.; Barr, E. D.; Bateman, T.; Bhandari, S.; Campbell-Wilson, D.; Farah, W.; Green, A. J.; Hunstead, R. W.; Jameson, A.; Jankowski, F.; Keane, E. F.; Parthasarathy, A.; Ravi, V.; Rosado, P. A.; van Straten, W.; Venkatraman Krishnan, V. (March 2017), "The first interferometric detections of fast radio bursts", Monthly Notices of the Royal Astronomical Society, 468 (3): 3746–3756, arXiv:1703.10173, doi:10.1093/mnras/stx638
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| C. | Caleb, Manisha; Heywood, Ian; Rajwade, Kaustubh; Malenta, Mateusz; Willem Stappers, Benjamin; Barr, Ewan; Chen, Weiwei; Morello, Vincent; Sanidas, Sotiris; van den Eijnden, Jakob; Kramer, Michael; Buckley, David; Brink, Jaco; Motta, Sara Elisa; Woudt, Patrick; Weltevrede, Patrick; Jankowski, Fabian; Surnis, Mayuresh; Buchner, Sarah; Bezuidenhout, Mechiel Christiaan; Driessen, Laura Nicole; Fender, Rob (May 2022), "Discovery of a radio-emitting neutron star with an ultra-long spin period of 76 s", Nature Astronomy, 6 (7): 828–836, arXiv:2206.01346, Bibcode:2022NatAs...6..828C, doi:10.1038/s41550-022-01688-x, PMC 7613111, PMID 3588020276 s&rft.volume=6&rft.issue=7&rft.pages=828-836&rft.date=2022-05&rft_id=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7613111#id-name=PMC&rft_id=info:bibcode/2022NatAs...6..828C&rft_id=info:arxiv/2206.01346&rft_id=info:pmid/35880202&rft_id=info:doi/10.1038/s41550-022-01688-x&rft.aulast=Caleb&rft.aufirst=Manisha&rft.au=Heywood, Ian&rft.au=Rajwade, Kaustubh&rft.au=Malenta, Mateusz&rft.au=Willem Stappers, Benjamin&rft.au=Barr, Ewan&rft.au=Chen, Weiwei&rft.au=Morello, Vincent&rft.au=Sanidas, Sotiris&rft.au=van den Eijnden, Jakob&rft.au=Kramer, Michael&rft.au=Buckley, David&rft.au=Brink, Jaco&rft.au=Motta, Sara Elisa&rft.au=Woudt, Patrick&rft.au=Weltevrede, Patrick&rft.au=Jankowski, Fabian&rft.au=Surnis, Mayuresh&rft.au=Buchner, Sarah&rft.au=Bezuidenhout, Mechiel Christiaan&rft.au=Driessen, Laura Nicole&rft.au=Fender, Rob&rfr_id=info:sid/en.wikipedia.org:Manisha Caleb" class="Z3988">
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| D. | Caleb, M.; Lenc, E.; Kaplan, D. L.; Murphy, T.; Men, Y. P.; Shannon, R. M.; Ferrario, L.; Rajwade, K. M.; Clarke, T. E.; Giacintucci, S.; Hurley-Walker, N.; Hyman, S. D.; Lower, M. E.; McSweeney, Sam; Ravi, V.; Barr, E. D.; Buchner, S.; Flynn, C. M. L.; Hessels, J. W. T.; Kramer, M.; Pritchard, J.; Stappers, B. W. (June 2024), "An emission-state-switching radio transient with a 54-minute period", Nature Astronomy, 8 (9): 1159–1168, arXiv:2407.12266, Bibcode:2024NatAs...8.1159C, doi:10.1038/s41550-024-02277-w
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References
edit- ^ a b c d Stella Maris College organised a Popular Lecture on Radio Astronomy and Fast Radio Bursts (PDF), Stella Maris College, 8 January 2020, retrieved 2024-06-25
- ^ a b c "Academic Staff", Sydney Institute for Astronomy, University of Sydney, retrieved 2024-06-25
- ^ a b Unusual neutron star discovered in stellar graveyard, University of Sydney, 31 May 2022, retrieved 2024-06-25
- ^ a b Lea, Robert (7 June 2024), "Scientists find slowest spinning 'radio neutron star' — it breaks all the dead-star rules", Space.com, retrieved 2024-06-25
- ^ a b c Mudur, G. S. (6 June 2024), "Astronomers announce their discovery of a dead star spinning at bafflingly slow rate; Indian astronomer in Australia leads discovery team", The Telegraph (India), retrieved 2024-06-25
- ^ "Manisha Pranati Caleb", AstroGen, American Astronomical Society, retrieved 2024-06-25
- ^ Atkinson, Nancy (4 April 2017), "Extraterrestrial Origin Of Fast Radio Burst Phenomenon Confirmed", Universe Today, retrieved 2024-06-25
External links
edit- YouTube video of Caleb giving an elevator pitch for her research
- Manisha Caleb publications indexed by Google Scholar