Matches in SemOpenAlex for { <https://semopenalex.org/work/W3092022048> ?p ?o ?g. }
- W3092022048 abstract "Aims. Most pulsar nulling observations have been conducted at frequencies lower than 1400 MHz. We aim to understand the nulling behaviors of pulsars at relatively high frequencies, and to decipher whether or not nulling is caused by a global change in the pulsar magnetosphere.Methods. We used the Jiamusi 66 m telescope to observe 20 bright pulsars at 2250 MHz with unprecedented lengths of time. We estimated the nulling fractions of these pulsars, and identified the null and emission states of the pulses. We also calculated the nulling degrees and scales of the emission-null pairs to describe the distributions of emission and null lengths.Results. Three pulsars, PSRs J0248+6021, J0543+2329, and J1844+00, are found to null for the first time. The details of null-to-emission and emission-to-null transitions within the pulse window are observed for the first time for PSR J1509+5531, which is a low-probability event. A complete cycle of long nulls with timescales of hours is observed for PSR J1709−1640. For most of these pulsars, the K-S tests of nulling degrees and nulling scales reject the hypothesis that null and emission are caused by random processes at high significance levels. Emission-null sequences of some pulsars exhibit quasi-periodic, low-frequency or featureless modulations, which might be related to different origins. During transitions between emission and null states, pulse intensities have diverse tendencies for variation. Significant correlations are found between respectively nulling fraction, nulling cadence, and nulling scale and the energy loss rate of the pulsars. Combined with the nulling fractions reported in the literature for 146 nulling pulsars, we find that statistically large nulling fractions are more tightly related to pulsar period than to characteristic age or energy-loss rate." @default.
- W3092022048 created "2020-10-15" @default.
- W3092022048 creator A5002756705 @default.
- W3092022048 creator A5003326909 @default.
- W3092022048 creator A5004665148 @default.
- W3092022048 creator A5008881724 @default.
- W3092022048 creator A5009025145 @default.
- W3092022048 creator A5022422625 @default.
- W3092022048 creator A5036916028 @default.
- W3092022048 creator A5039895979 @default.
- W3092022048 creator A5042358251 @default.
- W3092022048 creator A5045400401 @default.
- W3092022048 creator A5052844169 @default.
- W3092022048 creator A5076042197 @default.
- W3092022048 creator A5085211104 @default.
- W3092022048 creator A5085918884 @default.
- W3092022048 date "2020-12-01" @default.
- W3092022048 modified "2023-10-16" @default.
- W3092022048 title "Jiamusi pulsar observations - III. Nulling of 20 pulsars" @default.
- W3092022048 cites W1519557512 @default.
- W3092022048 cites W1766331502 @default.
- W3092022048 cites W1964451682 @default.
- W3092022048 cites W1973820399 @default.
- W3092022048 cites W1974094991 @default.
- W3092022048 cites W1978215109 @default.
- W3092022048 cites W1991109437 @default.
- W3092022048 cites W1997040929 @default.
- W3092022048 cites W1997347703 @default.
- W3092022048 cites W2003262934 @default.
- W3092022048 cites W2003947427 @default.
- W3092022048 cites W2011060087 @default.
- W3092022048 cites W2012995738 @default.
- W3092022048 cites W2033797919 @default.
- W3092022048 cites W2034772882 @default.
- W3092022048 cites W2040303458 @default.
- W3092022048 cites W2042981210 @default.
- W3092022048 cites W2046331236 @default.
- W3092022048 cites W2057181233 @default.
- W3092022048 cites W2057917518 @default.
- W3092022048 cites W2073121255 @default.
- W3092022048 cites W2074460496 @default.
- W3092022048 cites W2077558004 @default.
- W3092022048 cites W2085611103 @default.
- W3092022048 cites W2088044529 @default.
- W3092022048 cites W2099770474 @default.
- W3092022048 cites W2107863303 @default.
- W3092022048 cites W2111697027 @default.
- W3092022048 cites W2124738416 @default.
- W3092022048 cites W2129356971 @default.
- W3092022048 cites W2142481143 @default.
- W3092022048 cites W2143927851 @default.
- W3092022048 cites W2146846592 @default.
- W3092022048 cites W2154048913 @default.
- W3092022048 cites W2157802283 @default.
- W3092022048 cites W2170452176 @default.
- W3092022048 cites W2248891268 @default.
- W3092022048 cites W2269593968 @default.
- W3092022048 cites W2285337482 @default.
- W3092022048 cites W2765202923 @default.
- W3092022048 cites W2777708328 @default.
- W3092022048 cites W2786425985 @default.
- W3092022048 cites W2885795495 @default.
- W3092022048 cites W2939814226 @default.
- W3092022048 cites W2948855557 @default.
- W3092022048 cites W2963827521 @default.
- W3092022048 cites W2984098307 @default.
- W3092022048 cites W2993061966 @default.
- W3092022048 cites W3008375845 @default.
- W3092022048 cites W3098219389 @default.
- W3092022048 cites W3098865783 @default.
- W3092022048 cites W3099019009 @default.
- W3092022048 cites W3099828819 @default.
- W3092022048 cites W3101517277 @default.
- W3092022048 cites W3102158786 @default.
- W3092022048 cites W3102686097 @default.
- W3092022048 cites W3102804607 @default.
- W3092022048 cites W3103837855 @default.
- W3092022048 cites W3104763469 @default.
- W3092022048 hasPublicationYear "2020" @default.
- W3092022048 type Work @default.
- W3092022048 sameAs 3092022048 @default.
- W3092022048 citedByCount "1" @default.
- W3092022048 countsByYear W30920220482020 @default.
- W3092022048 crossrefType "journal-article" @default.
- W3092022048 hasAuthorship W3092022048A5002756705 @default.
- W3092022048 hasAuthorship W3092022048A5003326909 @default.
- W3092022048 hasAuthorship W3092022048A5004665148 @default.
- W3092022048 hasAuthorship W3092022048A5008881724 @default.
- W3092022048 hasAuthorship W3092022048A5009025145 @default.
- W3092022048 hasAuthorship W3092022048A5022422625 @default.
- W3092022048 hasAuthorship W3092022048A5036916028 @default.
- W3092022048 hasAuthorship W3092022048A5039895979 @default.
- W3092022048 hasAuthorship W3092022048A5042358251 @default.
- W3092022048 hasAuthorship W3092022048A5045400401 @default.
- W3092022048 hasAuthorship W3092022048A5052844169 @default.
- W3092022048 hasAuthorship W3092022048A5076042197 @default.
- W3092022048 hasAuthorship W3092022048A5085211104 @default.
- W3092022048 hasAuthorship W3092022048A5085918884 @default.
- W3092022048 hasConcept C110363677 @default.
- W3092022048 hasConcept C120665830 @default.