Pulsed Gamma Rays From The Original Millisecond And Black Widow Pulsars: A Case For Caustic Radio Emission?
Abstract
We report the detection of pulsed gamma-ray emission from the fast millisecond pulsars (MSPs) B1937+21 (also known as J1939+2134) and B1957+20 (J1959+2048) using 18 months of survey data recorded by the Fermi Large Area Telescope (LAT) and timing solutions based on radio observations conducted at the Westerbork and Nancay radio telescopes. In addition, we analyzed archival RXTE and XMM-Newton X-ray data for the two MSPs, con rming the X-ray emission properties of PSR B1937+21 and nding evidence (~ 4σ) for pulsed emission from PSR B1957+20 for the rst time. In both cases the gamma-ray emission pro le is characterized by two peaks separated by half a rotation and are in close alignment with components observed in radio and X-rays. These two pulsars join PSRs J0034-0534 and J2214+3000 to form an emerging class of gamma-ray MSPs with phase-aligned peaks in different energy bands. The modeling of the radio and gamma-ray emission pro les suggests co-located emission regions in the outer magnetosphere.
- Authors:
-
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- Max Planck Inst. for Radioastronomy, Bonn (Germany)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States); National Academy of Sciences, Washington, DC (United States); Naval Research Lab. (NRL), Washington, DC (United States)
- North-West Univ., Potchefstroom (South Africa)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- CNRS, Toulouse Cedex (France); Univ. of Toulouse (France)
- McGill Univ., Montreal, QC (Canada)
- Univ. of Manchester (United Kingdom)
- Lab. de Physique et Chimie de l'Environnement (LPCE), Orleans (France); CNRS (France). Observatoire de Paris
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- Columbia Univ., New York, NY (United States). Columbia Astrophysics Lab.
- Istituto Nazionale di Fisica Nucleare (INFN), Bari (Italy)
- Naval Research Lab. (NRL), Washington, DC (United States)
- Australia Telescope National Facility, Epping, NSW (Australia)
- Naval Research Lab. (NRL), Washington, DC (United States); George Mason Univ., Fairfax, VA (United States)
- National Radio Astronomy Observatory (NRAO), Charlottesville, VA (United States)
- Univ. Bordeaux (France)
- Willamette Univ., Salem, OR (United States)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1356769
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal
- Additional Journal Information:
- Journal Volume: 744; Journal Issue: 1; Journal ID: ISSN 0004-637X
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Guillemot, L., Johnson, T. J., Venter, C., Kerr, M., Pancrazi, B., Livingstone, M., Janssen, G. H., Jaroenjittichai, P., Kramer, M., Cognard, I., Stappers, B. W., Harding, A. K., Camilo, F., Espinoza, C. M., Freire, P. C. C., Gargano, F., Grove, J. E., Johnston, S., Michelson, P. F., Noutsos, A., Parent, D., Ransom, S. M., Ray, P. S., Shannon, R., Smith, D. A., Theureau, G., Thorsett, S. E., and Webb, N. Pulsed Gamma Rays From The Original Millisecond And Black Widow Pulsars: A Case For Caustic Radio Emission?. United States: N. p., 2011.
Web. doi:10.1088/0004-637X/744/1/33.
Guillemot, L., Johnson, T. J., Venter, C., Kerr, M., Pancrazi, B., Livingstone, M., Janssen, G. H., Jaroenjittichai, P., Kramer, M., Cognard, I., Stappers, B. W., Harding, A. K., Camilo, F., Espinoza, C. M., Freire, P. C. C., Gargano, F., Grove, J. E., Johnston, S., Michelson, P. F., Noutsos, A., Parent, D., Ransom, S. M., Ray, P. S., Shannon, R., Smith, D. A., Theureau, G., Thorsett, S. E., & Webb, N. Pulsed Gamma Rays From The Original Millisecond And Black Widow Pulsars: A Case For Caustic Radio Emission?. United States. https://doi.org/10.1088/0004-637X/744/1/33
Guillemot, L., Johnson, T. J., Venter, C., Kerr, M., Pancrazi, B., Livingstone, M., Janssen, G. H., Jaroenjittichai, P., Kramer, M., Cognard, I., Stappers, B. W., Harding, A. K., Camilo, F., Espinoza, C. M., Freire, P. C. C., Gargano, F., Grove, J. E., Johnston, S., Michelson, P. F., Noutsos, A., Parent, D., Ransom, S. M., Ray, P. S., Shannon, R., Smith, D. A., Theureau, G., Thorsett, S. E., and Webb, N. Mon .
"Pulsed Gamma Rays From The Original Millisecond And Black Widow Pulsars: A Case For Caustic Radio Emission?". United States. https://doi.org/10.1088/0004-637X/744/1/33. https://www.osti.gov/servlets/purl/1356769.
@article{osti_1356769,
title = {Pulsed Gamma Rays From The Original Millisecond And Black Widow Pulsars: A Case For Caustic Radio Emission?},
author = {Guillemot, L. and Johnson, T. J. and Venter, C. and Kerr, M. and Pancrazi, B. and Livingstone, M. and Janssen, G. H. and Jaroenjittichai, P. and Kramer, M. and Cognard, I. and Stappers, B. W. and Harding, A. K. and Camilo, F. and Espinoza, C. M. and Freire, P. C. C. and Gargano, F. and Grove, J. E. and Johnston, S. and Michelson, P. F. and Noutsos, A. and Parent, D. and Ransom, S. M. and Ray, P. S. and Shannon, R. and Smith, D. A. and Theureau, G. and Thorsett, S. E. and Webb, N.},
abstractNote = {We report the detection of pulsed gamma-ray emission from the fast millisecond pulsars (MSPs) B1937+21 (also known as J1939+2134) and B1957+20 (J1959+2048) using 18 months of survey data recorded by the Fermi Large Area Telescope (LAT) and timing solutions based on radio observations conducted at the Westerbork and Nancay radio telescopes. In addition, we analyzed archival RXTE and XMM-Newton X-ray data for the two MSPs, con rming the X-ray emission properties of PSR B1937+21 and nding evidence (~ 4σ) for pulsed emission from PSR B1957+20 for the rst time. In both cases the gamma-ray emission pro le is characterized by two peaks separated by half a rotation and are in close alignment with components observed in radio and X-rays. These two pulsars join PSRs J0034-0534 and J2214+3000 to form an emerging class of gamma-ray MSPs with phase-aligned peaks in different energy bands. The modeling of the radio and gamma-ray emission pro les suggests co-located emission regions in the outer magnetosphere.},
doi = {10.1088/0004-637X/744/1/33},
journal = {The Astrophysical Journal},
number = 1,
volume = 744,
place = {United States},
year = {Mon Dec 12 00:00:00 EST 2011},
month = {Mon Dec 12 00:00:00 EST 2011}
}
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