A Search for Pulsars in Steep Spectrum Radio Sources

Maan Y, Bassa C, van Leeuwen J, Moochickal Ambalappat K, Joshi BC (2018)
The Astrophysical Journal 864(1): 16.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Maan, Yogesh; Bassa, Cees; van Leeuwen, Joeri; Moochickal Ambalappat, KrishnakumarUniBi ; Joshi, Bhal Chandra
Abstract / Bemerkung
We report on a time-domain search for pulsars in 44 steep spectrum radio sources originally identified from recent imaging surveys. The time-domain search was conducted at 327 MHz using the Ooty radio telescope, and utilized a semicoherent dedispersion scheme, retaining the sensitivity even for submillisecond periods up to reasonably high dispersion measures. No new pulsars were found. We discuss the nature of these steep spectrum sources and argue that the majority of the sources in our sample should either be pulsars or a new category of galactic sources. Several possibilities that could hinder detection of these sources as pulsars, including anomalously high scattering or alignment of the rotation and magnetic axes, are discussed in detail, and we suggest unconventional search methods to further probe these possibilities.
Erscheinungsjahr
2018
Zeitschriftentitel
The Astrophysical Journal
Band
864
Ausgabe
1
Art.-Nr.
16
eISSN
1538-4357
Page URI
https://pub.uni-bielefeld.de/record/2953647

Zitieren

Maan Y, Bassa C, van Leeuwen J, Moochickal Ambalappat K, Joshi BC. A Search for Pulsars in Steep Spectrum Radio Sources. The Astrophysical Journal. 2018;864(1): 16.
Maan, Y., Bassa, C., van Leeuwen, J., Moochickal Ambalappat, K., & Joshi, B. C. (2018). A Search for Pulsars in Steep Spectrum Radio Sources. The Astrophysical Journal, 864(1), 16. https://doi.org/10.3847/1538-4357/aad4ad
Maan, Y., Bassa, C., van Leeuwen, J., Moochickal Ambalappat, K., and Joshi, B. C. (2018). A Search for Pulsars in Steep Spectrum Radio Sources. The Astrophysical Journal 864:16.
Maan, Y., et al., 2018. A Search for Pulsars in Steep Spectrum Radio Sources. The Astrophysical Journal, 864(1): 16.
Y. Maan, et al., “A Search for Pulsars in Steep Spectrum Radio Sources”, The Astrophysical Journal, vol. 864, 2018, : 16.
Maan, Y., Bassa, C., van Leeuwen, J., Moochickal Ambalappat, K., Joshi, B.C.: A Search for Pulsars in Steep Spectrum Radio Sources. The Astrophysical Journal. 864, : 16 (2018).
Maan, Yogesh, Bassa, Cees, van Leeuwen, Joeri, Moochickal Ambalappat, Krishnakumar, and Joshi, Bhal Chandra. “A Search for Pulsars in Steep Spectrum Radio Sources”. The Astrophysical Journal 864.1 (2018): 16.

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