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of 23
pro vyhledávání: '"Johnson, Tyrel J."'
Autor:
Barnard, Monica, Venter, Christo, Harding, Alice K., Kalapotharakos, Constantinos, Johnson, Tyrel J.
Recent kinetic simulations sparked a debate regarding the emission mechanism responsible for pulsed GeV $\gamma$-ray emission from pulsars. Some models invoke curvature radiation, while other models assume synchrotron radiation in the current-sheet.
Externí odkaz:
http://arxiv.org/abs/2111.03405
Autor:
Ndiyavala, Hambeleleni, Venter, Christo, Johnson, Tyrel J., Harding, Alice K., Smith, David A., Eger, Peter, Kopp, Andreas, van Der walt, Johan
Terzan 5 is the only Galactic globular cluster that has plausibly been detected at very-high energies by the High Energy Stereoscopic System. It has an unexpectedly asymmetric very-high-energy morphology that is offset from the cluster center, in add
Externí odkaz:
http://arxiv.org/abs/1905.10229
Autor:
Smith, David A., Bruel, Philippe, Cognard, Ismaël, Cameron, Andrew D., Camilo, Fernando, Dai, Shi, Guillemot, Lucas, Johnson, Tyrel J., Johnston, Simon, Keith, Michael J., Kerr, Matthew, Kramer, Michael, Lyne, Andrew G., Manchester, Richard N., Shannon, Ryan, Sobey, Charlotte, Stappers, Benjamin W., Weltevrede, Patrick
Identifying as many gamma-ray pulsars as possible in the Fermi Large Area Telescope (LAT) data helps test pulsar emission models by comparing predicted and observed properties for a large, varied sample with as little selection bias as possible. It a
Externí odkaz:
http://arxiv.org/abs/1812.00719
Autor:
Swihart, Samuel J., Strader, Jay, Johnson, Tyrel J., Cheung, C. C., Sand, David, Chomiuk, Laura, Wasserman, Asher, Larsen, Søren, Brodie, Jean P., Simonian, Gregory V., Tremou, Evangelia, Shishkovsky, Laura, Reichart, Daniel E., Haislip, Joshua
We present optical photometric and spectroscopic observations of the likely stellar counterpart to the unassociated \emph{Fermi}-Large Area Telescope (LAT) $\gamma$-ray source 2FGL J0846.0+2820, selected for study based on positional coincidences of
Externí odkaz:
http://arxiv.org/abs/1711.02077
Autor:
Ho, Wynn C. G., Ng, C. -Y., Lyne, Andrew G., Stappers, Ben W., Coe, Malcolm J., Halpern, Jules P., Johnson, Tyrel J., Steele, Iain A.
Publikováno v:
Mon. Not. R. Astron. Soc. 464, 1211-1219 (2017)
The radio and gamma-ray pulsar PSR J2032+4127 was recently found to be in a decades-long orbit with the Be star MT91 213, with the pulsar moving rapidly towards periastron. This binary shares many similar characteristics with the previously unique bi
Externí odkaz:
http://arxiv.org/abs/1609.06328
Autor:
Roy, Jayanta, Ray, Paul S., Bhattacharyya, Bhaswati, Stappers, Ben, Chengalur, Jayaram N., Deneva, Julia, Camilo, Fernando, Johnson, Tyrel J., Wolff, Michael, Hessels, Jason W. T., Bassa, Cees G., Keane, Evan F., Ferrara, Elizabeth C., Harding, Alice K., Wood, Kent S.
XSS J12270-4859 is an X-ray binary associated with the Fermi LAT gamma-ray source 1FGL J1227.9-4852. In 2012 December, this source underwent a transition where the X-ray and optical luminosity dropped and the spectral signatures of an accretion disc
Externí odkaz:
http://arxiv.org/abs/1412.4735
Pulsed gamma rays have been detected with the Fermi Large Area Telescope (LAT) from more than 20 millisecond pulsars (MSPs), some of which were discovered in radio observations of bright, unassociated LAT sources. We have fit the radio and gamma-ray
Externí odkaz:
http://arxiv.org/abs/1110.5476
Radio timing observations of millisecond pulsars (MSPs) in support of Fermi LAT observations of the gamma-ray sky enhance the sensitivity of high-energy pulsation searches. With contemporaneous ephemerides we have detected gamma-ray pulsations from P
Externí odkaz:
http://arxiv.org/abs/1101.0669
We present a summary of gamma-ray millisecond pulsar (MSP) observations with the Fermi Large Area Telescope. The radio and gamma-ray light curves of these MSPs have been modeled in the framework of the retarded vacuum dipole magnetic field. Likelihoo
Externí odkaz:
http://arxiv.org/abs/1012.3635
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