The central compact object 1E 1207.4-5209 emits pulsed radio waves at its 0.4-second spin period, revealing it as a faint radio pulsar.
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A New Electron Density Model for Estimation of Pulsar and FRB Distances
18 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
We present a new model for the distribution of free electrons in the Galaxy, the Magellanic Clouds and the intergalactic medium (IGM) that can be used to estimate distances to real or simulated pulsars and fast radio bursts (FRBs) based on their dispersion measure (DM). The Galactic model has an extended thick disk representing the so-called warm interstellar medium, a thin disk representing the Galactic molecular ring, spiral arms based on a recent fit to Galactic HII regions, a Galactic Center disk and seven local features including the Gum Nebula, Galactic Loop I and the Local Bubble. An offset of the Sun from the Galactic plane and a warp of the outer Galactic disk are included in the model. Parameters of the Galactic model are determined by fitting to 189 pulsars with independently determined distances and DMs. Simple models are used for the Magellanic Clouds and the IGM. Galactic model distances are within the uncertainty range for 86 of the 189 independently determined distances and within 20\% of the nearest limit for a further 38 pulsars. We estimate that 95\% of predicted Galactic pulsar distances will have a relative error of less than a factor of 0.9. The predictions of YMW16 are compared to those of the TC93 and NE2001 models showing that YMW16 performs significantly better on all measures. Timescales for pulse broadening due to interstellar scattering are estimated for (real or simulated) Galactic and Magellanic Cloud pulsars and FRBs.
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representative citing papers
The DM distribution of unlocalized FRBs yields H0 = 73.8 +14.0/-12.3 km/s/Mpc with 18% uncertainty.
One acceleration measurement equals ~10^5 phase-space measurements for local dark matter density estimation, with acceleration outperforming Jeans modeling in both equilibrium and perturbed Milky Way simulations.
First detection of relativistic angular deformation δ_θ in PSR J1757−1854 via MeerKAT-enhanced timing, ruling out two of four prior geometric solutions while confirming GR consistency for orbital decay.
DEFROST algorithm disentangles Galactic and extragalactic Faraday rotation in RM catalogs, recovering extragalactic parameters within 5 sigma for sources at absolute Galactic latitude above 45 degrees.
Atlas of 205 non-recycled southern pulsars at 140–170 MHz from MWA SMART data, with profiles, DMs, RMs, fluxes and public data products for SKA-Low.
Derives series solution for two-zone cosmic-ray diffusion and finds local-source probability at 10 TeV rises from 0.4% to 1.7-2.2% but remains model-dependent.
The Guitar nebula's pulsar appears to accelerate electrons to within ~3/4 of the theoretical maximum potential, and its brightness is best explained by the pulsar crossing an old supernova remnant's compressed, magnetized shell.
Using eclipse attenuation in the LMC X-4 neutron star binary, the authors set g_aγ ≤ 1.44 × 10^{-10} GeV^{-1} at 90% CL, surpassing current light-shining-through-walls bounds.
Forward modeling of multi-frequency HRRLs at 342 MHz, 800 MHz and 5.8 GHz constrains electron densities of dense warm ionized gas in the Galactic plane to 6–15 cm^{-3}.
Pulsars that received weak natal kicks tend to have weaker magnetic fields, and no fast-kicked pulsar with a field below ~10^11 G appears in the sample.
SPICE is an automated pipeline that recovers known pulsars in GMRT data by detecting scintillation signatures in interferometric visibilities.
A 9-hour FAST observation covering ~4230 GCs in M49 found no FRBs and sets an upper limit of 4.7e-4 FRB GC^-1 hr^-1 above ~16.5 mJy ms fluence.
Cosmographic constraints from 106 FRBs on H0, q0, j0 depend sensitively on whether a Gaussian or quasi-Gaussian PDF is assumed for DM_IGM and on whether the baryon mass fraction is fixed or free.
Bayesian analysis of PPTA-DR3 and EPTA-DR2 finds no statistically significant ULDM signals and sets 95% CL upper limits on scalar and dark photon dark matter, improving prior bounds in most mass ranges.
FRBs serve as cosmological probes via dispersion measure, scattering, and Faraday rotation to constrain baryon distribution, expansion history, magnetic fields, and fundamental physics effects.
A reported periodic fast radio burst is reclassified as Galactic pulsar emission due to CHIME calibration and beam-pointing error.
Review chapter summarizing the importance of small-scale galactic magnetic fields and proposing SKA observation strategies.
citing papers explorer
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Pulsed radio emission from a Central Compact Object
The central compact object 1E 1207.4-5209 emits pulsed radio waves at its 0.4-second spin period, revealing it as a faint radio pulsar.
-
Dispersion Measure Distribution of Unlocalized Fast Radio Bursts as a Probe of the Hubble Constant
The DM distribution of unlocalized FRBs yields H0 = 73.8 +14.0/-12.3 km/s/Mpc with 18% uncertainty.
-
An Acceleration is Worth a Hundred Thousand Phase Space Measurements
One acceleration measurement equals ~10^5 phase-space measurements for local dark matter density estimation, with acceleration outperforming Jeans modeling in both equilibrium and perturbed Milky Way simulations.
-
Detection of relativistic orbital deformation from improved timing of PSR J1757$-$1854
First detection of relativistic angular deformation δ_θ in PSR J1757−1854 via MeerKAT-enhanced timing, ruling out two of four prior geometric solutions while confirming GR consistency for orbital decay.
-
DEFROST: Detecting Excess in Faraday Rotation thrOugh Sophisticated analysis Techniques
DEFROST algorithm disentangles Galactic and extragalactic Faraday rotation in RM catalogs, recovering extragalactic parameters within 5 sigma for sources at absolute Galactic latitude above 45 degrees.
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The Southern-sky MWA Rapid Two-metre (SMART) pulsar survey--IV. Survey update and an atlas of 205 non-recycled southern pulsars
Atlas of 205 non-recycled southern pulsars at 140–170 MHz from MWA SMART data, with profiles, DMs, RMs, fluxes and public data products for SKA-Low.
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On the Contribution of Local Sources to the Galactic Cosmic-Ray Spectrum: An Exact Series Solution for Two-Zone Diffusion
Derives series solution for two-zone cosmic-ray diffusion and finds local-source probability at 10 TeV rises from 0.4% to 1.7-2.2% but remains model-dependent.
-
Guitar Nebula: extreme accelerator in extreme environment
The Guitar nebula's pulsar appears to accelerate electrons to within ~3/4 of the theoretical maximum potential, and its brightness is best explained by the pulsar crossing an old supernova remnant's compressed, magnetized shell.
-
Neutron Star Eclipses as Axion Laboratories
Using eclipse attenuation in the LMC X-4 neutron star binary, the authors set g_aγ ≤ 1.44 × 10^{-10} GeV^{-1} at 90% CL, surpassing current light-shining-through-walls bounds.
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Constraints on the properties of warm ionized gas from low-frequency hydrogen radio recombination lines
Forward modeling of multi-frequency HRRLs at 342 MHz, 800 MHz and 5.8 GHz constrains electron densities of dense warm ionized gas in the Galactic plane to 6–15 cm^{-3}.
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Dependences of radio pulsar parameters on the bimodal kick mode
Pulsars that received weak natal kicks tend to have weaker magnetic fields, and no fast-kicked pulsar with a field below ~10^11 G appears in the sample.
-
SPICE: Scintillation Pipeline for Interferometric Candidate Extraction
SPICE is an automated pipeline that recovers known pulsars in GMRT data by detecting scintillation signatures in interferometric visibilities.
-
A search for Fast Radio Bursts from globular clusters in M49 with FAST
A 9-hour FAST observation covering ~4230 GCs in M49 found no FRBs and sets an upper limit of 4.7e-4 FRB GC^-1 hr^-1 above ~16.5 mJy ms fluence.
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The impact of FRB dispersion measure probability distribution functions on cosmographic estimates
Cosmographic constraints from 106 FRBs on H0, q0, j0 depend sensitively on whether a Gaussian or quasi-Gaussian PDF is assumed for DM_IGM and on whether the baryon mass fraction is fixed or free.
-
Constraints on Ultralight Scalar and Dark Photon Dark Matter from PPTA-DR3 and EPTA-DR2
Bayesian analysis of PPTA-DR3 and EPTA-DR2 finds no statistically significant ULDM signals and sets 95% CL upper limits on scalar and dark photon dark matter, improving prior bounds in most mass ranges.
-
Fast Radio Bursts as Cosmological Probes
FRBs serve as cosmological probes via dispersion measure, scattering, and Faraday rotation to constrain baryon distribution, expansion history, magnetic fields, and fundamental physics effects.
-
A series of unfortunate events: CHIME/FRB misclassification of a Galactic pulsar as a periodic fast radio burst
A reported periodic fast radio burst is reclassified as Galactic pulsar emission due to CHIME calibration and beam-pointing error.
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Small-scale Magnetic Fields in the Milky Way and Nearby Galaxies
Review chapter summarizing the importance of small-scale galactic magnetic fields and proposing SKA observation strategies.