Publications by authors named "A S Pearlman"
Article Synopsis
- Fast radio bursts (FRBs) are brief bursts of radio waves from distant galaxies, and their emission mechanisms are still debated, focusing on processes near a central engine versus shocks at large distances.
- Researchers measured two scintillation scales for FRB 20221022A, one linked to the Milky Way and the other to its host galaxy, which allowed them to determine the FRB's emission region size to be less than 3 x 10 kilometers.
- This size contradicts the large-distance model and suggests that the emission likely occurs close to a central compact object, supported by an observed S-shaped polarization angle, indicating a magnetospheric emission process.
Article Synopsis
- Fast radio bursts (FRBs) are intense signals from deep space that last for milliseconds and share some characteristics with pulsars, suggesting they may originate from neutron stars.
- Despite similarities, FRBs like 20221022A display different patterns in their linear polarization position angle (PA), particularly a 130° rotation that aligns with pulsar behaviors, hinting at magnetospheric origins.
- This study rules out short-period pulsars as potential sources for FRB 20221022A, supporting the idea that its unique PA evolution fits the rotating vector model commonly used for pulsars.
Unlabelled: Patients who have radiographically detectable lesions in their brain or other symptoms compatible with brain tumors pose challenges for diagnosis. The only definitive way to diagnose such patients is through brain biopsy, an obviously invasive and dangerous procedure. Here we present a new workflow termed "CSF-BAM" that simultaneously identifies cell or T cell receptor rearrangements, neuploidy, and using PCR-mediated amplification of both strands of the DNA from CSF samples.
View Article and Find Full Text PDFBackground: Preoperative review of computed tomography (CT) imaging assists with endoscopic sinus surgery (ESS) planning, where trainees may benefit from a systematic approach. We have previously developed an optimized preoperative checklist for sinus CT imaging using an iterative modified Delphi method.
Objective: In this study, we assess the utility of an optimized preoperative checklist for residents performing ESS.
Microbiome of the Middle Meatus, Tonsils, and Adenoids in Pediatric Chronic Rhinosinusitis.
Otolaryngol Head Neck Surg
October 2024
Article Synopsis
- The study aims to compare the microbiome of pediatric patients with chronic rhinosinusitis (PCRS) to those without, focusing on how these conditions affect quality of life.
- Using a case-control design, samples were taken from patients undergoing adenoidectomy for either PCRS or obstructive sleep apnea, and various analyses were conducted on their microbiome.
- Results showed differences in bacterial diversity and composition between different anatomical sites (adenoid, tonsils, and middle meatus) but found no significant differences between PCRS patients and controls, hinting at possible bacterial colonization in PCRS patients.