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Date: Fri, 15 Aug 2025 03:10:11 -0400
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Subject: ATel  17333

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Posted: Within the last 24 hours
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ATEL #17333							     ATEL #17333

Title:	Detection of CHIME J1634+44 pulses at 111 MHz
Author:	Viktoriya Fedorova (P. N.Lebedev Physical Institute), A. E.Rodin
		(P. N.Lebedev Physical Institute)
Queries:	v.fedorova@lebedev.ru
Posted:	14 Aug 2025; 15:06 UT
Subjects:Radio, Gravitational Waves, Neutron Star, Transient, Pulsar,
		Fast Radio Burst, Magnetar

The paper (<a href="https://arxiv.org/pdf/2507.05139">arXiv:2507.05139</a>)
reported the discovery of a new Long Period Radio Transient (LPT) - CHIME
J1634+44. We analyzed data from the BSA LPI radio telescope from January
2022 to April 2025 to search for pulses of CHIME J1634+44 at a frequency
of 110.25 +/- 1.25 MHz. Over 100 hours of observations have been analyzed,
2 pulses were detected, the parameters of which are given below.<br /></span></span>

<table style="height: 142px; width: 271px;"> 
<tbody> 
<tr> 
<td style="width: 70px;">UTC</td> 
<td style="width: 200px;">2024-07-17, 18:23:13.89665</td> 
<td style="width: 200px;">2024-09-15, 14:22:59.60489</td> 
</tr> 
<tr> 
<td style="width: 70px;">MJD</td> 
<td style="width: 92px;">60508.7661331 </td> 
<td style="width: 103px;">60568.599301 </td> 
</tr> 
<tr> 
<td style="width: 70px;">Pulse width </td> 
<td style="width: 92px;">0.990 s</td> 
<td style="width: 103px;">0.954 s</td> 
</tr> 
<tr> 
<td style="width: 70px;">Peak flux </td> 
<td style="width: 92px;">9.0 Jy </td> 
<td style="width: 103px;">3.2 Jy</td> 
</tr> 
<td style="width: 70px;">Fluence </td> 
<td style="width: 92px;">8947 Jy ms </td> 
<td style="width: 103px;">3051 Jy ms </td> 
</tr> 
<tr> 
<td style="width: 70px;">DM </td> 
<td style="width: 92px;">25 pc/cm^3 </td> 
<td style="width: 103px;">25 pc/cm^3 </td> 
</tr> 
<tr> 
<td style="width: 70px;">SNR</td> 
<td style="width: 103px;">14.64 </td> 
<td style="width: 92px;">25.59 </td> 
</tr> 
<tr>

</tbody> 
</table>

&nbsp;

The PDF file with dynamic spectra and total pulses is available at the
link:  
<a href="https://disk.yandex.ru/i/DSv-ApGLE_uUGQ">plots</a>.

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